//
// Copyright 2010-2023 Amazon.com, Inc. or its affiliates. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License").
// You may not use this file except in compliance with the License.
// A copy of the License is located at
//
// http://aws.amazon.com/apache2.0
//
// or in the "license" file accompanying this file. This file is distributed
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// express or implied. See the License for the specific language governing
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#import <Foundation/Foundation.h>
#import <AWSCore/AWSCore.h>
#import "AWSSQSModel.h"
#import "AWSSQSResources.h"

NS_ASSUME_NONNULL_BEGIN

//! SDK version for AWSSQS
FOUNDATION_EXPORT NSString *const AWSSQSSDKVersion;

/**
 <p>Welcome to the <i>Amazon SQS API Reference</i>.</p><p>Amazon SQS is a reliable, highly-scalable hosted queue for storing messages as they travel between applications or microservices. Amazon SQS moves data between distributed application components and helps you decouple these components.</p><p>For information on the permissions you need to use this API, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-authentication-and-access-control.html">Identity and access management</a> in the <i>Amazon SQS Developer Guide.</i></p><p>You can use <a href="http://aws.amazon.com/tools/#sdk">Amazon Web Services SDKs</a> to access Amazon SQS using your favorite programming language. The SDKs perform tasks such as the following automatically:</p><ul><li><p>Cryptographically sign your service requests</p></li><li><p>Retry requests</p></li><li><p>Handle error responses</p></li></ul><p><b>Additional information</b></p><ul><li><p><a href="http://aws.amazon.com/sqs/">Amazon SQS Product Page</a></p></li><li><p><i>Amazon SQS Developer Guide</i></p><ul><li><p><a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-making-api-requests.html">Making API Requests</a></p></li><li><p><a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-message-metadata.html#sqs-message-attributes">Amazon SQS Message Attributes</a></p></li><li><p><a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-dead-letter-queues.html">Amazon SQS Dead-Letter Queues</a></p></li></ul></li><li><p><a href="http://docs.aws.amazon.com/cli/latest/reference/sqs/index.html">Amazon SQS in the <i>Command Line Interface</i></a></p></li><li><p><i>Amazon Web Services General Reference</i></p><ul><li><p><a href="https://docs.aws.amazon.com/general/latest/gr/rande.html#sqs_region">Regions and Endpoints</a></p></li></ul></li></ul>
 */
@interface AWSSQS : AWSService

/**
 The service configuration used to instantiate this service client.
 
 @warning Once the client is instantiated, do not modify the configuration object. It may cause unspecified behaviors.
 */
@property (nonatomic, strong, readonly) AWSServiceConfiguration *configuration;

/**
 Returns the singleton service client. If the singleton object does not exist, the SDK instantiates the default service client with `defaultServiceConfiguration` from `[AWSServiceManager defaultServiceManager]`. The reference to this object is maintained by the SDK, and you do not need to retain it manually.

 For example, set the default service configuration in `- application:didFinishLaunchingWithOptions:`
 
 *Swift*

     func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        let credentialProvider = AWSCognitoCredentialsProvider(regionType: .USEast1, identityPoolId: "YourIdentityPoolId")
        let configuration = AWSServiceConfiguration(region: .USEast1, credentialsProvider: credentialProvider)
        AWSServiceManager.default().defaultServiceConfiguration = configuration
 
        return true
    }

 *Objective-C*

     - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
          AWSCognitoCredentialsProvider *credentialsProvider = [[AWSCognitoCredentialsProvider alloc] initWithRegionType:AWSRegionUSEast1
                                                                                                          identityPoolId:@"YourIdentityPoolId"];
          AWSServiceConfiguration *configuration = [[AWSServiceConfiguration alloc] initWithRegion:AWSRegionUSEast1
                                                                               credentialsProvider:credentialsProvider];
          [AWSServiceManager defaultServiceManager].defaultServiceConfiguration = configuration;

          return YES;
      }

 Then call the following to get the default service client:

 *Swift*

     let SQS = AWSSQS.default()

 *Objective-C*

     AWSSQS *SQS = [AWSSQS defaultSQS];

 @return The default service client.
 */
+ (instancetype)defaultSQS;

/**
 Creates a service client with the given service configuration and registers it for the key.

 For example, set the default service configuration in `- application:didFinishLaunchingWithOptions:`

 *Swift*

     func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        let credentialProvider = AWSCognitoCredentialsProvider(regionType: .USEast1, identityPoolId: "YourIdentityPoolId")
        let configuration = AWSServiceConfiguration(region: .USWest2, credentialsProvider: credentialProvider)
        AWSSQS.register(with: configuration!, forKey: "USWest2SQS")
 
        return true
    }

 *Objective-C*

     - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
         AWSCognitoCredentialsProvider *credentialsProvider = [[AWSCognitoCredentialsProvider alloc] initWithRegionType:AWSRegionUSEast1
                                                                                                         identityPoolId:@"YourIdentityPoolId"];
         AWSServiceConfiguration *configuration = [[AWSServiceConfiguration alloc] initWithRegion:AWSRegionUSWest2
                                                                              credentialsProvider:credentialsProvider];

         [AWSSQS registerSQSWithConfiguration:configuration forKey:@"USWest2SQS"];

         return YES;
     }

 Then call the following to get the service client:

 *Swift*

     let SQS = AWSSQS(forKey: "USWest2SQS")

 *Objective-C*

     AWSSQS *SQS = [AWSSQS SQSForKey:@"USWest2SQS"];

 @warning After calling this method, do not modify the configuration object. It may cause unspecified behaviors.

 @param configuration A service configuration object.
 @param key           A string to identify the service client.
 */
+ (void)registerSQSWithConfiguration:(AWSServiceConfiguration *)configuration forKey:(NSString *)key;

/**
 Retrieves the service client associated with the key. You need to call `+ registerSQSWithConfiguration:forKey:` before invoking this method.

 For example, set the default service configuration in `- application:didFinishLaunchingWithOptions:`

 *Swift*

     func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        let credentialProvider = AWSCognitoCredentialsProvider(regionType: .USEast1, identityPoolId: "YourIdentityPoolId")
        let configuration = AWSServiceConfiguration(region: .USWest2, credentialsProvider: credentialProvider)
        AWSSQS.register(with: configuration!, forKey: "USWest2SQS")
 
        return true
    }

 *Objective-C*

     - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
         AWSCognitoCredentialsProvider *credentialsProvider = [[AWSCognitoCredentialsProvider alloc] initWithRegionType:AWSRegionUSEast1
                                                                                                         identityPoolId:@"YourIdentityPoolId"];
         AWSServiceConfiguration *configuration = [[AWSServiceConfiguration alloc] initWithRegion:AWSRegionUSWest2
                                                                              credentialsProvider:credentialsProvider];

         [AWSSQS registerSQSWithConfiguration:configuration forKey:@"USWest2SQS"];

         return YES;
     }

 Then call the following to get the service client:

 *Swift*

     let SQS = AWSSQS(forKey: "USWest2SQS")

 *Objective-C*

     AWSSQS *SQS = [AWSSQS SQSForKey:@"USWest2SQS"];

 @param key A string to identify the service client.

 @return An instance of the service client.
 */
+ (instancetype)SQSForKey:(NSString *)key;

/**
 Removes the service client associated with the key and release it.
 
 @warning Before calling this method, make sure no method is running on this client.
 
 @param key A string to identify the service client.
 */
+ (void)removeSQSForKey:(NSString *)key;

/**
 <p>Adds a permission to a queue for a specific <a href="https://docs.aws.amazon.com/general/latest/gr/glos-chap.html#P">principal</a>. This allows sharing access to the queue.</p><p>When you create a queue, you have full control access rights for the queue. Only you, the owner of the queue, can grant or deny permissions to the queue. For more information about these permissions, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-writing-an-sqs-policy.html#write-messages-to-shared-queue">Allow Developers to Write Messages to a Shared Queue</a> in the <i>Amazon SQS Developer Guide</i>.</p><note><ul><li><p><code>AddPermission</code> generates a policy for you. You can use <code><a>SetQueueAttributes</a></code> to upload your policy. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-creating-custom-policies.html">Using Custom Policies with the Amazon SQS Access Policy Language</a> in the <i>Amazon SQS Developer Guide</i>.</p></li><li><p>An Amazon SQS policy can have a maximum of seven actions per statement.</p></li><li><p>To remove the ability to change queue permissions, you must deny permission to the <code>AddPermission</code>, <code>RemovePermission</code>, and <code>SetQueueAttributes</code> actions in your IAM policy.</p></li><li><p>Amazon SQS <code>AddPermission</code> does not support adding a non-account principal.</p></li></ul></note><note><p>Cross-account permissions don't apply to this action. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-customer-managed-policy-examples.html#grant-cross-account-permissions-to-role-and-user-name">Grant cross-account permissions to a role and a username</a> in the <i>Amazon SQS Developer Guide</i>.</p></note>
 
 @param request A container for the necessary parameters to execute the AddPermission service method.

 @return An instance of `AWSTask`. On successful execution, `task.result` will be `nil`. On failed execution, `task.error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorOverLimit`.
 
 @see AWSSQSAddPermissionRequest
 */
- (AWSTask *)addPermission:(AWSSQSAddPermissionRequest *)request;

/**
 <p>Adds a permission to a queue for a specific <a href="https://docs.aws.amazon.com/general/latest/gr/glos-chap.html#P">principal</a>. This allows sharing access to the queue.</p><p>When you create a queue, you have full control access rights for the queue. Only you, the owner of the queue, can grant or deny permissions to the queue. For more information about these permissions, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-writing-an-sqs-policy.html#write-messages-to-shared-queue">Allow Developers to Write Messages to a Shared Queue</a> in the <i>Amazon SQS Developer Guide</i>.</p><note><ul><li><p><code>AddPermission</code> generates a policy for you. You can use <code><a>SetQueueAttributes</a></code> to upload your policy. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-creating-custom-policies.html">Using Custom Policies with the Amazon SQS Access Policy Language</a> in the <i>Amazon SQS Developer Guide</i>.</p></li><li><p>An Amazon SQS policy can have a maximum of seven actions per statement.</p></li><li><p>To remove the ability to change queue permissions, you must deny permission to the <code>AddPermission</code>, <code>RemovePermission</code>, and <code>SetQueueAttributes</code> actions in your IAM policy.</p></li><li><p>Amazon SQS <code>AddPermission</code> does not support adding a non-account principal.</p></li></ul></note><note><p>Cross-account permissions don't apply to this action. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-customer-managed-policy-examples.html#grant-cross-account-permissions-to-role-and-user-name">Grant cross-account permissions to a role and a username</a> in the <i>Amazon SQS Developer Guide</i>.</p></note>
 
 @param request A container for the necessary parameters to execute the AddPermission service method.
 @param completionHandler The completion handler to call when the load request is complete.
                          `error` - An error object that indicates why the request failed, or `nil` if the request was successful. On failed execution, `error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorOverLimit`.
 
 @see AWSSQSAddPermissionRequest
 */
- (void)addPermission:(AWSSQSAddPermissionRequest *)request completionHandler:(void (^ _Nullable)(NSError * _Nullable error))completionHandler;

/**
 <p>Cancels a specified message movement task.</p><note><ul><li><p>A message movement can only be cancelled when the current status is RUNNING.</p></li><li><p>Cancelling a message movement task does not revert the messages that have already been moved. It can only stop the messages that have not been moved yet.</p></li></ul></note>
 
 @param request A container for the necessary parameters to execute the CancelMessageMoveTask service method.

 @return An instance of `AWSTask`. On successful execution, `task.result` will contain an instance of `AWSSQSCancelMessageMoveTaskResult`. On failed execution, `task.error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorResourceNotFound`, `AWSSQSErrorUnsupportedOperation`.
 
 @see AWSSQSCancelMessageMoveTaskRequest
 @see AWSSQSCancelMessageMoveTaskResult
 */
- (AWSTask<AWSSQSCancelMessageMoveTaskResult *> *)cancelMessageMoveTask:(AWSSQSCancelMessageMoveTaskRequest *)request;

/**
 <p>Cancels a specified message movement task.</p><note><ul><li><p>A message movement can only be cancelled when the current status is RUNNING.</p></li><li><p>Cancelling a message movement task does not revert the messages that have already been moved. It can only stop the messages that have not been moved yet.</p></li></ul></note>
 
 @param request A container for the necessary parameters to execute the CancelMessageMoveTask service method.
 @param completionHandler The completion handler to call when the load request is complete.
                          `response` - A response object, or `nil` if the request failed.
                          `error` - An error object that indicates why the request failed, or `nil` if the request was successful. On failed execution, `error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorResourceNotFound`, `AWSSQSErrorUnsupportedOperation`.
 
 @see AWSSQSCancelMessageMoveTaskRequest
 @see AWSSQSCancelMessageMoveTaskResult
 */
- (void)cancelMessageMoveTask:(AWSSQSCancelMessageMoveTaskRequest *)request completionHandler:(void (^ _Nullable)(AWSSQSCancelMessageMoveTaskResult * _Nullable response, NSError * _Nullable error))completionHandler;

/**
 <p>Changes the visibility timeout of a specified message in a queue to a new value. The default visibility timeout for a message is 30 seconds. The minimum is 0 seconds. The maximum is 12 hours. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-visibility-timeout.html">Visibility Timeout</a> in the <i>Amazon SQS Developer Guide</i>.</p><p>For example, if the default timeout for a queue is 60 seconds, 15 seconds have elapsed since you received the message, and you send a ChangeMessageVisibility call with <code>VisibilityTimeout</code> set to 10 seconds, the 10 seconds begin to count from the time that you make the <code>ChangeMessageVisibility</code> call. Thus, any attempt to change the visibility timeout or to delete that message 10 seconds after you initially change the visibility timeout (a total of 25 seconds) might result in an error.</p><p>An Amazon SQS message has three basic states:</p><ol><li><p>Sent to a queue by a producer.</p></li><li><p>Received from the queue by a consumer.</p></li><li><p>Deleted from the queue.</p></li></ol><p>A message is considered to be <i>stored</i> after it is sent to a queue by a producer, but not yet received from the queue by a consumer (that is, between states 1 and 2). There is no limit to the number of stored messages. A message is considered to be <i>in flight</i> after it is received from a queue by a consumer, but not yet deleted from the queue (that is, between states 2 and 3). There is a limit to the number of in flight messages.</p><p>Limits that apply to in flight messages are unrelated to the <i>unlimited</i> number of stored messages.</p><p>For most standard queues (depending on queue traffic and message backlog), there can be a maximum of approximately 120,000 in flight messages (received from a queue by a consumer, but not yet deleted from the queue). If you reach this limit, Amazon SQS returns the <code>OverLimit</code> error message. To avoid reaching the limit, you should delete messages from the queue after they're processed. You can also increase the number of queues you use to process your messages. To request a limit increase, <a href="https://console.aws.amazon.com/support/home#/case/create?issueType=service-limit-increase&amp;limitType=service-code-sqs">file a support request</a>.</p><p>For FIFO queues, there can be a maximum of 20,000 in flight messages (received from a queue by a consumer, but not yet deleted from the queue). If you reach this limit, Amazon SQS returns no error messages.</p><important><p>If you attempt to set the <code>VisibilityTimeout</code> to a value greater than the maximum time left, Amazon SQS returns an error. Amazon SQS doesn't automatically recalculate and increase the timeout to the maximum remaining time.</p><p>Unlike with a queue, when you change the visibility timeout for a specific message the timeout value is applied immediately but isn't saved in memory for that message. If you don't delete a message after it is received, the visibility timeout for the message reverts to the original timeout value (not to the value you set using the <code>ChangeMessageVisibility</code> action) the next time the message is received.</p></important>
 
 @param request A container for the necessary parameters to execute the ChangeMessageVisibility service method.

 @return An instance of `AWSTask`. On successful execution, `task.result` will be `nil`. On failed execution, `task.error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorMessageNotInflight`, `AWSSQSErrorReceiptHandleIsInvalid`.
 
 @see AWSSQSChangeMessageVisibilityRequest
 */
- (AWSTask *)changeMessageVisibility:(AWSSQSChangeMessageVisibilityRequest *)request;

/**
 <p>Changes the visibility timeout of a specified message in a queue to a new value. The default visibility timeout for a message is 30 seconds. The minimum is 0 seconds. The maximum is 12 hours. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-visibility-timeout.html">Visibility Timeout</a> in the <i>Amazon SQS Developer Guide</i>.</p><p>For example, if the default timeout for a queue is 60 seconds, 15 seconds have elapsed since you received the message, and you send a ChangeMessageVisibility call with <code>VisibilityTimeout</code> set to 10 seconds, the 10 seconds begin to count from the time that you make the <code>ChangeMessageVisibility</code> call. Thus, any attempt to change the visibility timeout or to delete that message 10 seconds after you initially change the visibility timeout (a total of 25 seconds) might result in an error.</p><p>An Amazon SQS message has three basic states:</p><ol><li><p>Sent to a queue by a producer.</p></li><li><p>Received from the queue by a consumer.</p></li><li><p>Deleted from the queue.</p></li></ol><p>A message is considered to be <i>stored</i> after it is sent to a queue by a producer, but not yet received from the queue by a consumer (that is, between states 1 and 2). There is no limit to the number of stored messages. A message is considered to be <i>in flight</i> after it is received from a queue by a consumer, but not yet deleted from the queue (that is, between states 2 and 3). There is a limit to the number of in flight messages.</p><p>Limits that apply to in flight messages are unrelated to the <i>unlimited</i> number of stored messages.</p><p>For most standard queues (depending on queue traffic and message backlog), there can be a maximum of approximately 120,000 in flight messages (received from a queue by a consumer, but not yet deleted from the queue). If you reach this limit, Amazon SQS returns the <code>OverLimit</code> error message. To avoid reaching the limit, you should delete messages from the queue after they're processed. You can also increase the number of queues you use to process your messages. To request a limit increase, <a href="https://console.aws.amazon.com/support/home#/case/create?issueType=service-limit-increase&amp;limitType=service-code-sqs">file a support request</a>.</p><p>For FIFO queues, there can be a maximum of 20,000 in flight messages (received from a queue by a consumer, but not yet deleted from the queue). If you reach this limit, Amazon SQS returns no error messages.</p><important><p>If you attempt to set the <code>VisibilityTimeout</code> to a value greater than the maximum time left, Amazon SQS returns an error. Amazon SQS doesn't automatically recalculate and increase the timeout to the maximum remaining time.</p><p>Unlike with a queue, when you change the visibility timeout for a specific message the timeout value is applied immediately but isn't saved in memory for that message. If you don't delete a message after it is received, the visibility timeout for the message reverts to the original timeout value (not to the value you set using the <code>ChangeMessageVisibility</code> action) the next time the message is received.</p></important>
 
 @param request A container for the necessary parameters to execute the ChangeMessageVisibility service method.
 @param completionHandler The completion handler to call when the load request is complete.
                          `error` - An error object that indicates why the request failed, or `nil` if the request was successful. On failed execution, `error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorMessageNotInflight`, `AWSSQSErrorReceiptHandleIsInvalid`.
 
 @see AWSSQSChangeMessageVisibilityRequest
 */
- (void)changeMessageVisibility:(AWSSQSChangeMessageVisibilityRequest *)request completionHandler:(void (^ _Nullable)(NSError * _Nullable error))completionHandler;

/**
 <p>Changes the visibility timeout of multiple messages. This is a batch version of <code><a>ChangeMessageVisibility</a>.</code> The result of the action on each message is reported individually in the response. You can send up to 10 <code><a>ChangeMessageVisibility</a></code> requests with each <code>ChangeMessageVisibilityBatch</code> action.</p><important><p>Because the batch request can result in a combination of successful and unsuccessful actions, you should check for batch errors even when the call returns an HTTP status code of <code>200</code>.</p></important>
 
 @param request A container for the necessary parameters to execute the ChangeMessageVisibilityBatch service method.

 @return An instance of `AWSTask`. On successful execution, `task.result` will contain an instance of `AWSSQSChangeMessageVisibilityBatchResult`. On failed execution, `task.error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorTooManyEntriesInBatchRequest`, `AWSSQSErrorEmptyBatchRequest`, `AWSSQSErrorBatchEntryIdsNotDistinct`, `AWSSQSErrorInvalidBatchEntryId`.
 
 @see AWSSQSChangeMessageVisibilityBatchRequest
 @see AWSSQSChangeMessageVisibilityBatchResult
 */
- (AWSTask<AWSSQSChangeMessageVisibilityBatchResult *> *)changeMessageVisibilityBatch:(AWSSQSChangeMessageVisibilityBatchRequest *)request;

/**
 <p>Changes the visibility timeout of multiple messages. This is a batch version of <code><a>ChangeMessageVisibility</a>.</code> The result of the action on each message is reported individually in the response. You can send up to 10 <code><a>ChangeMessageVisibility</a></code> requests with each <code>ChangeMessageVisibilityBatch</code> action.</p><important><p>Because the batch request can result in a combination of successful and unsuccessful actions, you should check for batch errors even when the call returns an HTTP status code of <code>200</code>.</p></important>
 
 @param request A container for the necessary parameters to execute the ChangeMessageVisibilityBatch service method.
 @param completionHandler The completion handler to call when the load request is complete.
                          `response` - A response object, or `nil` if the request failed.
                          `error` - An error object that indicates why the request failed, or `nil` if the request was successful. On failed execution, `error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorTooManyEntriesInBatchRequest`, `AWSSQSErrorEmptyBatchRequest`, `AWSSQSErrorBatchEntryIdsNotDistinct`, `AWSSQSErrorInvalidBatchEntryId`.
 
 @see AWSSQSChangeMessageVisibilityBatchRequest
 @see AWSSQSChangeMessageVisibilityBatchResult
 */
- (void)changeMessageVisibilityBatch:(AWSSQSChangeMessageVisibilityBatchRequest *)request completionHandler:(void (^ _Nullable)(AWSSQSChangeMessageVisibilityBatchResult * _Nullable response, NSError * _Nullable error))completionHandler;

/**
 <p>Creates a new standard or FIFO queue. You can pass one or more attributes in the request. Keep the following in mind:</p><ul><li><p>If you don't specify the <code>FifoQueue</code> attribute, Amazon SQS creates a standard queue.</p><note><p>You can't change the queue type after you create it and you can't convert an existing standard queue into a FIFO queue. You must either create a new FIFO queue for your application or delete your existing standard queue and recreate it as a FIFO queue. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/FIFO-queues.html#FIFO-queues-moving">Moving From a Standard Queue to a FIFO Queue</a> in the <i>Amazon SQS Developer Guide</i>. </p></note></li><li><p>If you don't provide a value for an attribute, the queue is created with the default value for the attribute.</p></li><li><p>If you delete a queue, you must wait at least 60 seconds before creating a queue with the same name.</p></li></ul><p>To successfully create a new queue, you must provide a queue name that adheres to the <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/limits-queues.html">limits related to queues</a> and is unique within the scope of your queues.</p><note><p>After you create a queue, you must wait at least one second after the queue is created to be able to use the queue.</p></note><p>To get the queue URL, use the <code><a>GetQueueUrl</a></code> action. <code><a>GetQueueUrl</a></code> requires only the <code>QueueName</code> parameter. be aware of existing queue names:</p><ul><li><p>If you provide the name of an existing queue along with the exact names and values of all the queue's attributes, <code>CreateQueue</code> returns the queue URL for the existing queue.</p></li><li><p>If the queue name, attribute names, or attribute values don't match an existing queue, <code>CreateQueue</code> returns an error.</p></li></ul><note><p>Cross-account permissions don't apply to this action. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-customer-managed-policy-examples.html#grant-cross-account-permissions-to-role-and-user-name">Grant cross-account permissions to a role and a username</a> in the <i>Amazon SQS Developer Guide</i>.</p></note>
 
 @param request A container for the necessary parameters to execute the CreateQueue service method.

 @return An instance of `AWSTask`. On successful execution, `task.result` will contain an instance of `AWSSQSCreateQueueResult`. On failed execution, `task.error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorQueueDeletedRecently`, `AWSSQSErrorQueueNameExists`.
 
 @see AWSSQSCreateQueueRequest
 @see AWSSQSCreateQueueResult
 */
- (AWSTask<AWSSQSCreateQueueResult *> *)createQueue:(AWSSQSCreateQueueRequest *)request;

/**
 <p>Creates a new standard or FIFO queue. You can pass one or more attributes in the request. Keep the following in mind:</p><ul><li><p>If you don't specify the <code>FifoQueue</code> attribute, Amazon SQS creates a standard queue.</p><note><p>You can't change the queue type after you create it and you can't convert an existing standard queue into a FIFO queue. You must either create a new FIFO queue for your application or delete your existing standard queue and recreate it as a FIFO queue. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/FIFO-queues.html#FIFO-queues-moving">Moving From a Standard Queue to a FIFO Queue</a> in the <i>Amazon SQS Developer Guide</i>. </p></note></li><li><p>If you don't provide a value for an attribute, the queue is created with the default value for the attribute.</p></li><li><p>If you delete a queue, you must wait at least 60 seconds before creating a queue with the same name.</p></li></ul><p>To successfully create a new queue, you must provide a queue name that adheres to the <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/limits-queues.html">limits related to queues</a> and is unique within the scope of your queues.</p><note><p>After you create a queue, you must wait at least one second after the queue is created to be able to use the queue.</p></note><p>To get the queue URL, use the <code><a>GetQueueUrl</a></code> action. <code><a>GetQueueUrl</a></code> requires only the <code>QueueName</code> parameter. be aware of existing queue names:</p><ul><li><p>If you provide the name of an existing queue along with the exact names and values of all the queue's attributes, <code>CreateQueue</code> returns the queue URL for the existing queue.</p></li><li><p>If the queue name, attribute names, or attribute values don't match an existing queue, <code>CreateQueue</code> returns an error.</p></li></ul><note><p>Cross-account permissions don't apply to this action. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-customer-managed-policy-examples.html#grant-cross-account-permissions-to-role-and-user-name">Grant cross-account permissions to a role and a username</a> in the <i>Amazon SQS Developer Guide</i>.</p></note>
 
 @param request A container for the necessary parameters to execute the CreateQueue service method.
 @param completionHandler The completion handler to call when the load request is complete.
                          `response` - A response object, or `nil` if the request failed.
                          `error` - An error object that indicates why the request failed, or `nil` if the request was successful. On failed execution, `error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorQueueDeletedRecently`, `AWSSQSErrorQueueNameExists`.
 
 @see AWSSQSCreateQueueRequest
 @see AWSSQSCreateQueueResult
 */
- (void)createQueue:(AWSSQSCreateQueueRequest *)request completionHandler:(void (^ _Nullable)(AWSSQSCreateQueueResult * _Nullable response, NSError * _Nullable error))completionHandler;

/**
 <p>Deletes the specified message from the specified queue. To select the message to delete, use the <code>ReceiptHandle</code> of the message (<i>not</i> the <code>MessageId</code> which you receive when you send the message). Amazon SQS can delete a message from a queue even if a visibility timeout setting causes the message to be locked by another consumer. Amazon SQS automatically deletes messages left in a queue longer than the retention period configured for the queue. </p><note><p>The <code>ReceiptHandle</code> is associated with a <i>specific instance</i> of receiving a message. If you receive a message more than once, the <code>ReceiptHandle</code> is different each time you receive a message. When you use the <code>DeleteMessage</code> action, you must provide the most recently received <code>ReceiptHandle</code> for the message (otherwise, the request succeeds, but the message will not be deleted).</p><p>For standard queues, it is possible to receive a message even after you delete it. This might happen on rare occasions if one of the servers which stores a copy of the message is unavailable when you send the request to delete the message. The copy remains on the server and might be returned to you during a subsequent receive request. You should ensure that your application is idempotent, so that receiving a message more than once does not cause issues.</p></note>
 
 @param request A container for the necessary parameters to execute the DeleteMessage service method.

 @return An instance of `AWSTask`. On successful execution, `task.result` will be `nil`. On failed execution, `task.error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorInvalidIdFormat`, `AWSSQSErrorReceiptHandleIsInvalid`.
 
 @see AWSSQSDeleteMessageRequest
 */
- (AWSTask *)deleteMessage:(AWSSQSDeleteMessageRequest *)request;

/**
 <p>Deletes the specified message from the specified queue. To select the message to delete, use the <code>ReceiptHandle</code> of the message (<i>not</i> the <code>MessageId</code> which you receive when you send the message). Amazon SQS can delete a message from a queue even if a visibility timeout setting causes the message to be locked by another consumer. Amazon SQS automatically deletes messages left in a queue longer than the retention period configured for the queue. </p><note><p>The <code>ReceiptHandle</code> is associated with a <i>specific instance</i> of receiving a message. If you receive a message more than once, the <code>ReceiptHandle</code> is different each time you receive a message. When you use the <code>DeleteMessage</code> action, you must provide the most recently received <code>ReceiptHandle</code> for the message (otherwise, the request succeeds, but the message will not be deleted).</p><p>For standard queues, it is possible to receive a message even after you delete it. This might happen on rare occasions if one of the servers which stores a copy of the message is unavailable when you send the request to delete the message. The copy remains on the server and might be returned to you during a subsequent receive request. You should ensure that your application is idempotent, so that receiving a message more than once does not cause issues.</p></note>
 
 @param request A container for the necessary parameters to execute the DeleteMessage service method.
 @param completionHandler The completion handler to call when the load request is complete.
                          `error` - An error object that indicates why the request failed, or `nil` if the request was successful. On failed execution, `error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorInvalidIdFormat`, `AWSSQSErrorReceiptHandleIsInvalid`.
 
 @see AWSSQSDeleteMessageRequest
 */
- (void)deleteMessage:(AWSSQSDeleteMessageRequest *)request completionHandler:(void (^ _Nullable)(NSError * _Nullable error))completionHandler;

/**
 <p>Deletes up to ten messages from the specified queue. This is a batch version of <code><a>DeleteMessage</a>.</code> The result of the action on each message is reported individually in the response.</p><important><p>Because the batch request can result in a combination of successful and unsuccessful actions, you should check for batch errors even when the call returns an HTTP status code of <code>200</code>.</p></important>
 
 @param request A container for the necessary parameters to execute the DeleteMessageBatch service method.

 @return An instance of `AWSTask`. On successful execution, `task.result` will contain an instance of `AWSSQSDeleteMessageBatchResult`. On failed execution, `task.error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorTooManyEntriesInBatchRequest`, `AWSSQSErrorEmptyBatchRequest`, `AWSSQSErrorBatchEntryIdsNotDistinct`, `AWSSQSErrorInvalidBatchEntryId`.
 
 @see AWSSQSDeleteMessageBatchRequest
 @see AWSSQSDeleteMessageBatchResult
 */
- (AWSTask<AWSSQSDeleteMessageBatchResult *> *)deleteMessageBatch:(AWSSQSDeleteMessageBatchRequest *)request;

/**
 <p>Deletes up to ten messages from the specified queue. This is a batch version of <code><a>DeleteMessage</a>.</code> The result of the action on each message is reported individually in the response.</p><important><p>Because the batch request can result in a combination of successful and unsuccessful actions, you should check for batch errors even when the call returns an HTTP status code of <code>200</code>.</p></important>
 
 @param request A container for the necessary parameters to execute the DeleteMessageBatch service method.
 @param completionHandler The completion handler to call when the load request is complete.
                          `response` - A response object, or `nil` if the request failed.
                          `error` - An error object that indicates why the request failed, or `nil` if the request was successful. On failed execution, `error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorTooManyEntriesInBatchRequest`, `AWSSQSErrorEmptyBatchRequest`, `AWSSQSErrorBatchEntryIdsNotDistinct`, `AWSSQSErrorInvalidBatchEntryId`.
 
 @see AWSSQSDeleteMessageBatchRequest
 @see AWSSQSDeleteMessageBatchResult
 */
- (void)deleteMessageBatch:(AWSSQSDeleteMessageBatchRequest *)request completionHandler:(void (^ _Nullable)(AWSSQSDeleteMessageBatchResult * _Nullable response, NSError * _Nullable error))completionHandler;

/**
 <p>Deletes the queue specified by the <code>QueueUrl</code>, regardless of the queue's contents.</p><important><p>Be careful with the <code>DeleteQueue</code> action: When you delete a queue, any messages in the queue are no longer available. </p></important><p>When you delete a queue, the deletion process takes up to 60 seconds. Requests you send involving that queue during the 60 seconds might succeed. For example, a <code><a>SendMessage</a></code> request might succeed, but after 60 seconds the queue and the message you sent no longer exist.</p><p>When you delete a queue, you must wait at least 60 seconds before creating a queue with the same name.</p><note><p>Cross-account permissions don't apply to this action. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-customer-managed-policy-examples.html#grant-cross-account-permissions-to-role-and-user-name">Grant cross-account permissions to a role and a username</a> in the <i>Amazon SQS Developer Guide</i>.</p><p>The delete operation uses the HTTP <code>GET</code> verb.</p></note>
 
 @param request A container for the necessary parameters to execute the DeleteQueue service method.

 @return An instance of `AWSTask`. On successful execution, `task.result` will be `nil`.
 
 @see AWSSQSDeleteQueueRequest
 */
- (AWSTask *)deleteQueue:(AWSSQSDeleteQueueRequest *)request;

/**
 <p>Deletes the queue specified by the <code>QueueUrl</code>, regardless of the queue's contents.</p><important><p>Be careful with the <code>DeleteQueue</code> action: When you delete a queue, any messages in the queue are no longer available. </p></important><p>When you delete a queue, the deletion process takes up to 60 seconds. Requests you send involving that queue during the 60 seconds might succeed. For example, a <code><a>SendMessage</a></code> request might succeed, but after 60 seconds the queue and the message you sent no longer exist.</p><p>When you delete a queue, you must wait at least 60 seconds before creating a queue with the same name.</p><note><p>Cross-account permissions don't apply to this action. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-customer-managed-policy-examples.html#grant-cross-account-permissions-to-role-and-user-name">Grant cross-account permissions to a role and a username</a> in the <i>Amazon SQS Developer Guide</i>.</p><p>The delete operation uses the HTTP <code>GET</code> verb.</p></note>
 
 @param request A container for the necessary parameters to execute the DeleteQueue service method.
 @param completionHandler The completion handler to call when the load request is complete.
                          `error` - An error object that indicates why the request failed, or `nil` if the request was successful.
 
 @see AWSSQSDeleteQueueRequest
 */
- (void)deleteQueue:(AWSSQSDeleteQueueRequest *)request completionHandler:(void (^ _Nullable)(NSError * _Nullable error))completionHandler;

/**
 <p>Gets attributes for the specified queue.</p><note><p>To determine whether a queue is <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/FIFO-queues.html">FIFO</a>, you can check whether <code>QueueName</code> ends with the <code>.fifo</code> suffix.</p></note>
 
 @param request A container for the necessary parameters to execute the GetQueueAttributes service method.

 @return An instance of `AWSTask`. On successful execution, `task.result` will contain an instance of `AWSSQSGetQueueAttributesResult`. On failed execution, `task.error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorInvalidAttributeName`.
 
 @see AWSSQSGetQueueAttributesRequest
 @see AWSSQSGetQueueAttributesResult
 */
- (AWSTask<AWSSQSGetQueueAttributesResult *> *)getQueueAttributes:(AWSSQSGetQueueAttributesRequest *)request;

/**
 <p>Gets attributes for the specified queue.</p><note><p>To determine whether a queue is <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/FIFO-queues.html">FIFO</a>, you can check whether <code>QueueName</code> ends with the <code>.fifo</code> suffix.</p></note>
 
 @param request A container for the necessary parameters to execute the GetQueueAttributes service method.
 @param completionHandler The completion handler to call when the load request is complete.
                          `response` - A response object, or `nil` if the request failed.
                          `error` - An error object that indicates why the request failed, or `nil` if the request was successful. On failed execution, `error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorInvalidAttributeName`.
 
 @see AWSSQSGetQueueAttributesRequest
 @see AWSSQSGetQueueAttributesResult
 */
- (void)getQueueAttributes:(AWSSQSGetQueueAttributesRequest *)request completionHandler:(void (^ _Nullable)(AWSSQSGetQueueAttributesResult * _Nullable response, NSError * _Nullable error))completionHandler;

/**
 <p>Returns the URL of an existing Amazon SQS queue.</p><p>To access a queue that belongs to another AWS account, use the <code>QueueOwnerAWSAccountId</code> parameter to specify the account ID of the queue's owner. The queue's owner must grant you permission to access the queue. For more information about shared queue access, see <code><a>AddPermission</a></code> or see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-writing-an-sqs-policy.html#write-messages-to-shared-queue">Allow Developers to Write Messages to a Shared Queue</a> in the <i>Amazon SQS Developer Guide</i>. </p>
 
 @param request A container for the necessary parameters to execute the GetQueueUrl service method.

 @return An instance of `AWSTask`. On successful execution, `task.result` will contain an instance of `AWSSQSGetQueueUrlResult`. On failed execution, `task.error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorQueueDoesNotExist`.
 
 @see AWSSQSGetQueueUrlRequest
 @see AWSSQSGetQueueUrlResult
 */
- (AWSTask<AWSSQSGetQueueUrlResult *> *)getQueueUrl:(AWSSQSGetQueueUrlRequest *)request;

/**
 <p>Returns the URL of an existing Amazon SQS queue.</p><p>To access a queue that belongs to another AWS account, use the <code>QueueOwnerAWSAccountId</code> parameter to specify the account ID of the queue's owner. The queue's owner must grant you permission to access the queue. For more information about shared queue access, see <code><a>AddPermission</a></code> or see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-writing-an-sqs-policy.html#write-messages-to-shared-queue">Allow Developers to Write Messages to a Shared Queue</a> in the <i>Amazon SQS Developer Guide</i>. </p>
 
 @param request A container for the necessary parameters to execute the GetQueueUrl service method.
 @param completionHandler The completion handler to call when the load request is complete.
                          `response` - A response object, or `nil` if the request failed.
                          `error` - An error object that indicates why the request failed, or `nil` if the request was successful. On failed execution, `error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorQueueDoesNotExist`.
 
 @see AWSSQSGetQueueUrlRequest
 @see AWSSQSGetQueueUrlResult
 */
- (void)getQueueUrl:(AWSSQSGetQueueUrlRequest *)request completionHandler:(void (^ _Nullable)(AWSSQSGetQueueUrlResult * _Nullable response, NSError * _Nullable error))completionHandler;

/**
 <p>Returns a list of your queues that have the <code>RedrivePolicy</code> queue attribute configured with a dead-letter queue.</p><p> The <code>ListDeadLetterSourceQueues</code> methods supports pagination. Set parameter <code>MaxResults</code> in the request to specify the maximum number of results to be returned in the response. If you do not set <code>MaxResults</code>, the response includes a maximum of 1,000 results. If you set <code>MaxResults</code> and there are additional results to display, the response includes a value for <code>NextToken</code>. Use <code>NextToken</code> as a parameter in your next request to <code>ListDeadLetterSourceQueues</code> to receive the next page of results. </p><p>For more information about using dead-letter queues, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-dead-letter-queues.html">Using Amazon SQS Dead-Letter Queues</a> in the <i>Amazon SQS Developer Guide</i>.</p>
 
 @param request A container for the necessary parameters to execute the ListDeadLetterSourceQueues service method.

 @return An instance of `AWSTask`. On successful execution, `task.result` will contain an instance of `AWSSQSListDeadLetterSourceQueuesResult`. On failed execution, `task.error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorQueueDoesNotExist`.
 
 @see AWSSQSListDeadLetterSourceQueuesRequest
 @see AWSSQSListDeadLetterSourceQueuesResult
 */
- (AWSTask<AWSSQSListDeadLetterSourceQueuesResult *> *)listDeadLetterSourceQueues:(AWSSQSListDeadLetterSourceQueuesRequest *)request;

/**
 <p>Returns a list of your queues that have the <code>RedrivePolicy</code> queue attribute configured with a dead-letter queue.</p><p> The <code>ListDeadLetterSourceQueues</code> methods supports pagination. Set parameter <code>MaxResults</code> in the request to specify the maximum number of results to be returned in the response. If you do not set <code>MaxResults</code>, the response includes a maximum of 1,000 results. If you set <code>MaxResults</code> and there are additional results to display, the response includes a value for <code>NextToken</code>. Use <code>NextToken</code> as a parameter in your next request to <code>ListDeadLetterSourceQueues</code> to receive the next page of results. </p><p>For more information about using dead-letter queues, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-dead-letter-queues.html">Using Amazon SQS Dead-Letter Queues</a> in the <i>Amazon SQS Developer Guide</i>.</p>
 
 @param request A container for the necessary parameters to execute the ListDeadLetterSourceQueues service method.
 @param completionHandler The completion handler to call when the load request is complete.
                          `response` - A response object, or `nil` if the request failed.
                          `error` - An error object that indicates why the request failed, or `nil` if the request was successful. On failed execution, `error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorQueueDoesNotExist`.
 
 @see AWSSQSListDeadLetterSourceQueuesRequest
 @see AWSSQSListDeadLetterSourceQueuesResult
 */
- (void)listDeadLetterSourceQueues:(AWSSQSListDeadLetterSourceQueuesRequest *)request completionHandler:(void (^ _Nullable)(AWSSQSListDeadLetterSourceQueuesResult * _Nullable response, NSError * _Nullable error))completionHandler;

/**
 <p>Gets the most recent message movement tasks (up to 10) under a specific source queue.</p>
 
 @param request A container for the necessary parameters to execute the ListMessageMoveTasks service method.

 @return An instance of `AWSTask`. On successful execution, `task.result` will contain an instance of `AWSSQSListMessageMoveTasksResult`. On failed execution, `task.error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorResourceNotFound`, `AWSSQSErrorUnsupportedOperation`.
 
 @see AWSSQSListMessageMoveTasksRequest
 @see AWSSQSListMessageMoveTasksResult
 */
- (AWSTask<AWSSQSListMessageMoveTasksResult *> *)listMessageMoveTasks:(AWSSQSListMessageMoveTasksRequest *)request;

/**
 <p>Gets the most recent message movement tasks (up to 10) under a specific source queue.</p>
 
 @param request A container for the necessary parameters to execute the ListMessageMoveTasks service method.
 @param completionHandler The completion handler to call when the load request is complete.
                          `response` - A response object, or `nil` if the request failed.
                          `error` - An error object that indicates why the request failed, or `nil` if the request was successful. On failed execution, `error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorResourceNotFound`, `AWSSQSErrorUnsupportedOperation`.
 
 @see AWSSQSListMessageMoveTasksRequest
 @see AWSSQSListMessageMoveTasksResult
 */
- (void)listMessageMoveTasks:(AWSSQSListMessageMoveTasksRequest *)request completionHandler:(void (^ _Nullable)(AWSSQSListMessageMoveTasksResult * _Nullable response, NSError * _Nullable error))completionHandler;

/**
 <p>List all cost allocation tags added to the specified Amazon SQS queue. For an overview, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-queue-tags.html">Tagging Your Amazon SQS Queues</a> in the <i>Amazon SQS Developer Guide</i>.</p><note><p>Cross-account permissions don't apply to this action. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-customer-managed-policy-examples.html#grant-cross-account-permissions-to-role-and-user-name">Grant cross-account permissions to a role and a username</a> in the <i>Amazon SQS Developer Guide</i>.</p></note>
 
 @param request A container for the necessary parameters to execute the ListQueueTags service method.

 @return An instance of `AWSTask`. On successful execution, `task.result` will contain an instance of `AWSSQSListQueueTagsResult`.
 
 @see AWSSQSListQueueTagsRequest
 @see AWSSQSListQueueTagsResult
 */
- (AWSTask<AWSSQSListQueueTagsResult *> *)listQueueTags:(AWSSQSListQueueTagsRequest *)request;

/**
 <p>List all cost allocation tags added to the specified Amazon SQS queue. For an overview, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-queue-tags.html">Tagging Your Amazon SQS Queues</a> in the <i>Amazon SQS Developer Guide</i>.</p><note><p>Cross-account permissions don't apply to this action. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-customer-managed-policy-examples.html#grant-cross-account-permissions-to-role-and-user-name">Grant cross-account permissions to a role and a username</a> in the <i>Amazon SQS Developer Guide</i>.</p></note>
 
 @param request A container for the necessary parameters to execute the ListQueueTags service method.
 @param completionHandler The completion handler to call when the load request is complete.
                          `response` - A response object, or `nil` if the request failed.
                          `error` - An error object that indicates why the request failed, or `nil` if the request was successful.
 
 @see AWSSQSListQueueTagsRequest
 @see AWSSQSListQueueTagsResult
 */
- (void)listQueueTags:(AWSSQSListQueueTagsRequest *)request completionHandler:(void (^ _Nullable)(AWSSQSListQueueTagsResult * _Nullable response, NSError * _Nullable error))completionHandler;

/**
 <p>Returns a list of your queues in the current region. The response includes a maximum of 1,000 results. If you specify a value for the optional <code>QueueNamePrefix</code> parameter, only queues with a name that begins with the specified value are returned.</p><p> The <code>listQueues</code> methods supports pagination. Set parameter <code>MaxResults</code> in the request to specify the maximum number of results to be returned in the response. If you do not set <code>MaxResults</code>, the response includes a maximum of 1,000 results. If you set <code>MaxResults</code> and there are additional results to display, the response includes a value for <code>NextToken</code>. Use <code>NextToken</code> as a parameter in your next request to <code>listQueues</code> to receive the next page of results. </p><note><p>Cross-account permissions don't apply to this action. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-customer-managed-policy-examples.html#grant-cross-account-permissions-to-role-and-user-name">Grant cross-account permissions to a role and a username</a> in the <i>Amazon SQS Developer Guide</i>.</p></note>
 
 @param request A container for the necessary parameters to execute the ListQueues service method.

 @return An instance of `AWSTask`. On successful execution, `task.result` will contain an instance of `AWSSQSListQueuesResult`.
 
 @see AWSSQSListQueuesRequest
 @see AWSSQSListQueuesResult
 */
- (AWSTask<AWSSQSListQueuesResult *> *)listQueues:(AWSSQSListQueuesRequest *)request;

/**
 <p>Returns a list of your queues in the current region. The response includes a maximum of 1,000 results. If you specify a value for the optional <code>QueueNamePrefix</code> parameter, only queues with a name that begins with the specified value are returned.</p><p> The <code>listQueues</code> methods supports pagination. Set parameter <code>MaxResults</code> in the request to specify the maximum number of results to be returned in the response. If you do not set <code>MaxResults</code>, the response includes a maximum of 1,000 results. If you set <code>MaxResults</code> and there are additional results to display, the response includes a value for <code>NextToken</code>. Use <code>NextToken</code> as a parameter in your next request to <code>listQueues</code> to receive the next page of results. </p><note><p>Cross-account permissions don't apply to this action. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-customer-managed-policy-examples.html#grant-cross-account-permissions-to-role-and-user-name">Grant cross-account permissions to a role and a username</a> in the <i>Amazon SQS Developer Guide</i>.</p></note>
 
 @param request A container for the necessary parameters to execute the ListQueues service method.
 @param completionHandler The completion handler to call when the load request is complete.
                          `response` - A response object, or `nil` if the request failed.
                          `error` - An error object that indicates why the request failed, or `nil` if the request was successful.
 
 @see AWSSQSListQueuesRequest
 @see AWSSQSListQueuesResult
 */
- (void)listQueues:(AWSSQSListQueuesRequest *)request completionHandler:(void (^ _Nullable)(AWSSQSListQueuesResult * _Nullable response, NSError * _Nullable error))completionHandler;

/**
 <p>Deletes the messages in a queue specified by the <code>QueueURL</code> parameter.</p><important><p>When you use the <code>PurgeQueue</code> action, you can't retrieve any messages deleted from a queue.</p><p>The message deletion process takes up to 60 seconds. We recommend waiting for 60 seconds regardless of your queue's size. </p></important><p>Messages sent to the queue <i>before</i> you call <code>PurgeQueue</code> might be received but are deleted within the next minute.</p><p>Messages sent to the queue <i>after</i> you call <code>PurgeQueue</code> might be deleted while the queue is being purged.</p>
 
 @param request A container for the necessary parameters to execute the PurgeQueue service method.

 @return An instance of `AWSTask`. On successful execution, `task.result` will be `nil`. On failed execution, `task.error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorQueueDoesNotExist`, `AWSSQSErrorPurgeQueueInProgress`.
 
 @see AWSSQSPurgeQueueRequest
 */
- (AWSTask *)purgeQueue:(AWSSQSPurgeQueueRequest *)request;

/**
 <p>Deletes the messages in a queue specified by the <code>QueueURL</code> parameter.</p><important><p>When you use the <code>PurgeQueue</code> action, you can't retrieve any messages deleted from a queue.</p><p>The message deletion process takes up to 60 seconds. We recommend waiting for 60 seconds regardless of your queue's size. </p></important><p>Messages sent to the queue <i>before</i> you call <code>PurgeQueue</code> might be received but are deleted within the next minute.</p><p>Messages sent to the queue <i>after</i> you call <code>PurgeQueue</code> might be deleted while the queue is being purged.</p>
 
 @param request A container for the necessary parameters to execute the PurgeQueue service method.
 @param completionHandler The completion handler to call when the load request is complete.
                          `error` - An error object that indicates why the request failed, or `nil` if the request was successful. On failed execution, `error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorQueueDoesNotExist`, `AWSSQSErrorPurgeQueueInProgress`.
 
 @see AWSSQSPurgeQueueRequest
 */
- (void)purgeQueue:(AWSSQSPurgeQueueRequest *)request completionHandler:(void (^ _Nullable)(NSError * _Nullable error))completionHandler;

/**
 <p>Retrieves one or more messages (up to 10), from the specified queue. Using the <code>WaitTimeSeconds</code> parameter enables long-poll support. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-long-polling.html">Amazon SQS Long Polling</a> in the <i>Amazon SQS Developer Guide</i>. </p><p>Short poll is the default behavior where a weighted random set of machines is sampled on a <code>ReceiveMessage</code> call. Thus, only the messages on the sampled machines are returned. If the number of messages in the queue is small (fewer than 1,000), you most likely get fewer messages than you requested per <code>ReceiveMessage</code> call. If the number of messages in the queue is extremely small, you might not receive any messages in a particular <code>ReceiveMessage</code> response. If this happens, repeat the request. </p><p>For each message returned, the response includes the following:</p><ul><li><p>The message body.</p></li><li><p>An MD5 digest of the message body. For information about MD5, see <a href="https://www.ietf.org/rfc/rfc1321.txt">RFC1321</a>.</p></li><li><p>The <code>MessageId</code> you received when you sent the message to the queue.</p></li><li><p>The receipt handle.</p></li><li><p>The message attributes.</p></li><li><p>An MD5 digest of the message attributes.</p></li></ul><p>The receipt handle is the identifier you must provide when deleting the message. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-queue-message-identifiers.html">Queue and Message Identifiers</a> in the <i>Amazon SQS Developer Guide</i>.</p><p>You can provide the <code>VisibilityTimeout</code> parameter in your request. The parameter is applied to the messages that Amazon SQS returns in the response. If you don't include the parameter, the overall visibility timeout for the queue is used for the returned messages. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-visibility-timeout.html">Visibility Timeout</a> in the <i>Amazon SQS Developer Guide</i>.</p><p>A message that isn't deleted or a message whose visibility isn't extended before the visibility timeout expires counts as a failed receive. Depending on the configuration of the queue, the message might be sent to the dead-letter queue.</p><note><p>In the future, new attributes might be added. If you write code that calls this action, we recommend that you structure your code so that it can handle new attributes gracefully.</p></note>
 
 @param request A container for the necessary parameters to execute the ReceiveMessage service method.

 @return An instance of `AWSTask`. On successful execution, `task.result` will contain an instance of `AWSSQSReceiveMessageResult`. On failed execution, `task.error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorOverLimit`.
 
 @see AWSSQSReceiveMessageRequest
 @see AWSSQSReceiveMessageResult
 */
- (AWSTask<AWSSQSReceiveMessageResult *> *)receiveMessage:(AWSSQSReceiveMessageRequest *)request;

/**
 <p>Retrieves one or more messages (up to 10), from the specified queue. Using the <code>WaitTimeSeconds</code> parameter enables long-poll support. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-long-polling.html">Amazon SQS Long Polling</a> in the <i>Amazon SQS Developer Guide</i>. </p><p>Short poll is the default behavior where a weighted random set of machines is sampled on a <code>ReceiveMessage</code> call. Thus, only the messages on the sampled machines are returned. If the number of messages in the queue is small (fewer than 1,000), you most likely get fewer messages than you requested per <code>ReceiveMessage</code> call. If the number of messages in the queue is extremely small, you might not receive any messages in a particular <code>ReceiveMessage</code> response. If this happens, repeat the request. </p><p>For each message returned, the response includes the following:</p><ul><li><p>The message body.</p></li><li><p>An MD5 digest of the message body. For information about MD5, see <a href="https://www.ietf.org/rfc/rfc1321.txt">RFC1321</a>.</p></li><li><p>The <code>MessageId</code> you received when you sent the message to the queue.</p></li><li><p>The receipt handle.</p></li><li><p>The message attributes.</p></li><li><p>An MD5 digest of the message attributes.</p></li></ul><p>The receipt handle is the identifier you must provide when deleting the message. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-queue-message-identifiers.html">Queue and Message Identifiers</a> in the <i>Amazon SQS Developer Guide</i>.</p><p>You can provide the <code>VisibilityTimeout</code> parameter in your request. The parameter is applied to the messages that Amazon SQS returns in the response. If you don't include the parameter, the overall visibility timeout for the queue is used for the returned messages. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-visibility-timeout.html">Visibility Timeout</a> in the <i>Amazon SQS Developer Guide</i>.</p><p>A message that isn't deleted or a message whose visibility isn't extended before the visibility timeout expires counts as a failed receive. Depending on the configuration of the queue, the message might be sent to the dead-letter queue.</p><note><p>In the future, new attributes might be added. If you write code that calls this action, we recommend that you structure your code so that it can handle new attributes gracefully.</p></note>
 
 @param request A container for the necessary parameters to execute the ReceiveMessage service method.
 @param completionHandler The completion handler to call when the load request is complete.
                          `response` - A response object, or `nil` if the request failed.
                          `error` - An error object that indicates why the request failed, or `nil` if the request was successful. On failed execution, `error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorOverLimit`.
 
 @see AWSSQSReceiveMessageRequest
 @see AWSSQSReceiveMessageResult
 */
- (void)receiveMessage:(AWSSQSReceiveMessageRequest *)request completionHandler:(void (^ _Nullable)(AWSSQSReceiveMessageResult * _Nullable response, NSError * _Nullable error))completionHandler;

/**
 <p>Revokes any permissions in the queue policy that matches the specified <code>Label</code> parameter.</p><note><ul><li><p>Only the owner of a queue can remove permissions from it.</p></li><li><p>Cross-account permissions don't apply to this action. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-customer-managed-policy-examples.html#grant-cross-account-permissions-to-role-and-user-name">Grant cross-account permissions to a role and a username</a> in the <i>Amazon SQS Developer Guide</i>.</p></li><li><p>To remove the ability to change queue permissions, you must deny permission to the <code>AddPermission</code>, <code>RemovePermission</code>, and <code>SetQueueAttributes</code> actions in your IAM policy.</p></li></ul></note>
 
 @param request A container for the necessary parameters to execute the RemovePermission service method.

 @return An instance of `AWSTask`. On successful execution, `task.result` will be `nil`.
 
 @see AWSSQSRemovePermissionRequest
 */
- (AWSTask *)removePermission:(AWSSQSRemovePermissionRequest *)request;

/**
 <p>Revokes any permissions in the queue policy that matches the specified <code>Label</code> parameter.</p><note><ul><li><p>Only the owner of a queue can remove permissions from it.</p></li><li><p>Cross-account permissions don't apply to this action. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-customer-managed-policy-examples.html#grant-cross-account-permissions-to-role-and-user-name">Grant cross-account permissions to a role and a username</a> in the <i>Amazon SQS Developer Guide</i>.</p></li><li><p>To remove the ability to change queue permissions, you must deny permission to the <code>AddPermission</code>, <code>RemovePermission</code>, and <code>SetQueueAttributes</code> actions in your IAM policy.</p></li></ul></note>
 
 @param request A container for the necessary parameters to execute the RemovePermission service method.
 @param completionHandler The completion handler to call when the load request is complete.
                          `error` - An error object that indicates why the request failed, or `nil` if the request was successful.
 
 @see AWSSQSRemovePermissionRequest
 */
- (void)removePermission:(AWSSQSRemovePermissionRequest *)request completionHandler:(void (^ _Nullable)(NSError * _Nullable error))completionHandler;

/**
 <p>Delivers a message to the specified queue.</p><important><p>A message can include only XML, JSON, and unformatted text. The following Unicode characters are allowed:</p><p><code>#x9</code> | <code>#xA</code> | <code>#xD</code> | <code>#x20</code> to <code>#xD7FF</code> | <code>#xE000</code> to <code>#xFFFD</code> | <code>#x10000</code> to <code>#x10FFFF</code></p><p>Any characters not included in this list will be rejected. For more information, see the <a href="http://www.w3.org/TR/REC-xml/#charsets">W3C specification for characters</a>.</p></important>
 
 @param request A container for the necessary parameters to execute the SendMessage service method.

 @return An instance of `AWSTask`. On successful execution, `task.result` will contain an instance of `AWSSQSSendMessageResult`. On failed execution, `task.error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorInvalidMessageContents`, `AWSSQSErrorUnsupportedOperation`.
 
 @see AWSSQSSendMessageRequest
 @see AWSSQSSendMessageResult
 */
- (AWSTask<AWSSQSSendMessageResult *> *)sendMessage:(AWSSQSSendMessageRequest *)request;

/**
 <p>Delivers a message to the specified queue.</p><important><p>A message can include only XML, JSON, and unformatted text. The following Unicode characters are allowed:</p><p><code>#x9</code> | <code>#xA</code> | <code>#xD</code> | <code>#x20</code> to <code>#xD7FF</code> | <code>#xE000</code> to <code>#xFFFD</code> | <code>#x10000</code> to <code>#x10FFFF</code></p><p>Any characters not included in this list will be rejected. For more information, see the <a href="http://www.w3.org/TR/REC-xml/#charsets">W3C specification for characters</a>.</p></important>
 
 @param request A container for the necessary parameters to execute the SendMessage service method.
 @param completionHandler The completion handler to call when the load request is complete.
                          `response` - A response object, or `nil` if the request failed.
                          `error` - An error object that indicates why the request failed, or `nil` if the request was successful. On failed execution, `error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorInvalidMessageContents`, `AWSSQSErrorUnsupportedOperation`.
 
 @see AWSSQSSendMessageRequest
 @see AWSSQSSendMessageResult
 */
- (void)sendMessage:(AWSSQSSendMessageRequest *)request completionHandler:(void (^ _Nullable)(AWSSQSSendMessageResult * _Nullable response, NSError * _Nullable error))completionHandler;

/**
 <p>You can use <code>SendMessageBatch</code> to send up to 10 messages to the specified queue by assigning either identical or different values to each message (or by not assigning values at all). This is a batch version of <code><a>SendMessage</a>.</code> For a FIFO queue, multiple messages within a single batch are enqueued in the order they are sent.</p><p>The result of sending each message is reported individually in the response. Because the batch request can result in a combination of successful and unsuccessful actions, you should check for batch errors even when the call returns an HTTP status code of <code>200</code>.</p><p>The maximum allowed individual message size and the maximum total payload size (the sum of the individual lengths of all of the batched messages) are both 256 KiB (262,144 bytes).</p><important><p>A message can include only XML, JSON, and unformatted text. The following Unicode characters are allowed:</p><p><code>#x9</code> | <code>#xA</code> | <code>#xD</code> | <code>#x20</code> to <code>#xD7FF</code> | <code>#xE000</code> to <code>#xFFFD</code> | <code>#x10000</code> to <code>#x10FFFF</code></p><p>Any characters not included in this list will be rejected. For more information, see the <a href="http://www.w3.org/TR/REC-xml/#charsets">W3C specification for characters</a>.</p></important><p>If you don't specify the <code>DelaySeconds</code> parameter for an entry, Amazon SQS uses the default value for the queue.</p>
 
 @param request A container for the necessary parameters to execute the SendMessageBatch service method.

 @return An instance of `AWSTask`. On successful execution, `task.result` will contain an instance of `AWSSQSSendMessageBatchResult`. On failed execution, `task.error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorTooManyEntriesInBatchRequest`, `AWSSQSErrorEmptyBatchRequest`, `AWSSQSErrorBatchEntryIdsNotDistinct`, `AWSSQSErrorBatchRequestTooLong`, `AWSSQSErrorInvalidBatchEntryId`, `AWSSQSErrorUnsupportedOperation`.
 
 @see AWSSQSSendMessageBatchRequest
 @see AWSSQSSendMessageBatchResult
 */
- (AWSTask<AWSSQSSendMessageBatchResult *> *)sendMessageBatch:(AWSSQSSendMessageBatchRequest *)request;

/**
 <p>You can use <code>SendMessageBatch</code> to send up to 10 messages to the specified queue by assigning either identical or different values to each message (or by not assigning values at all). This is a batch version of <code><a>SendMessage</a>.</code> For a FIFO queue, multiple messages within a single batch are enqueued in the order they are sent.</p><p>The result of sending each message is reported individually in the response. Because the batch request can result in a combination of successful and unsuccessful actions, you should check for batch errors even when the call returns an HTTP status code of <code>200</code>.</p><p>The maximum allowed individual message size and the maximum total payload size (the sum of the individual lengths of all of the batched messages) are both 256 KiB (262,144 bytes).</p><important><p>A message can include only XML, JSON, and unformatted text. The following Unicode characters are allowed:</p><p><code>#x9</code> | <code>#xA</code> | <code>#xD</code> | <code>#x20</code> to <code>#xD7FF</code> | <code>#xE000</code> to <code>#xFFFD</code> | <code>#x10000</code> to <code>#x10FFFF</code></p><p>Any characters not included in this list will be rejected. For more information, see the <a href="http://www.w3.org/TR/REC-xml/#charsets">W3C specification for characters</a>.</p></important><p>If you don't specify the <code>DelaySeconds</code> parameter for an entry, Amazon SQS uses the default value for the queue.</p>
 
 @param request A container for the necessary parameters to execute the SendMessageBatch service method.
 @param completionHandler The completion handler to call when the load request is complete.
                          `response` - A response object, or `nil` if the request failed.
                          `error` - An error object that indicates why the request failed, or `nil` if the request was successful. On failed execution, `error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorTooManyEntriesInBatchRequest`, `AWSSQSErrorEmptyBatchRequest`, `AWSSQSErrorBatchEntryIdsNotDistinct`, `AWSSQSErrorBatchRequestTooLong`, `AWSSQSErrorInvalidBatchEntryId`, `AWSSQSErrorUnsupportedOperation`.
 
 @see AWSSQSSendMessageBatchRequest
 @see AWSSQSSendMessageBatchResult
 */
- (void)sendMessageBatch:(AWSSQSSendMessageBatchRequest *)request completionHandler:(void (^ _Nullable)(AWSSQSSendMessageBatchResult * _Nullable response, NSError * _Nullable error))completionHandler;

/**
 <p>Sets the value of one or more queue attributes. When you change a queue's attributes, the change can take up to 60 seconds for most of the attributes to propagate throughout the Amazon SQS system. Changes made to the <code>MessageRetentionPeriod</code> attribute can take up to 15 minutes and will impact existing messages in the queue potentially causing them to be expired and deleted if the <code>MessageRetentionPeriod</code> is reduced below the age of existing messages.</p><note><ul><li><p>In the future, new attributes might be added. If you write code that calls this action, we recommend that you structure your code so that it can handle new attributes gracefully.</p></li><li><p>Cross-account permissions don't apply to this action. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-customer-managed-policy-examples.html#grant-cross-account-permissions-to-role-and-user-name">Grant cross-account permissions to a role and a username</a> in the <i>Amazon SQS Developer Guide</i>.</p></li><li><p>To remove the ability to change queue permissions, you must deny permission to the <code>AddPermission</code>, <code>RemovePermission</code>, and <code>SetQueueAttributes</code> actions in your IAM policy.</p></li></ul></note>
 
 @param request A container for the necessary parameters to execute the SetQueueAttributes service method.

 @return An instance of `AWSTask`. On successful execution, `task.result` will be `nil`. On failed execution, `task.error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorInvalidAttributeName`.
 
 @see AWSSQSSetQueueAttributesRequest
 */
- (AWSTask *)setQueueAttributes:(AWSSQSSetQueueAttributesRequest *)request;

/**
 <p>Sets the value of one or more queue attributes. When you change a queue's attributes, the change can take up to 60 seconds for most of the attributes to propagate throughout the Amazon SQS system. Changes made to the <code>MessageRetentionPeriod</code> attribute can take up to 15 minutes and will impact existing messages in the queue potentially causing them to be expired and deleted if the <code>MessageRetentionPeriod</code> is reduced below the age of existing messages.</p><note><ul><li><p>In the future, new attributes might be added. If you write code that calls this action, we recommend that you structure your code so that it can handle new attributes gracefully.</p></li><li><p>Cross-account permissions don't apply to this action. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-customer-managed-policy-examples.html#grant-cross-account-permissions-to-role-and-user-name">Grant cross-account permissions to a role and a username</a> in the <i>Amazon SQS Developer Guide</i>.</p></li><li><p>To remove the ability to change queue permissions, you must deny permission to the <code>AddPermission</code>, <code>RemovePermission</code>, and <code>SetQueueAttributes</code> actions in your IAM policy.</p></li></ul></note>
 
 @param request A container for the necessary parameters to execute the SetQueueAttributes service method.
 @param completionHandler The completion handler to call when the load request is complete.
                          `error` - An error object that indicates why the request failed, or `nil` if the request was successful. On failed execution, `error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorInvalidAttributeName`.
 
 @see AWSSQSSetQueueAttributesRequest
 */
- (void)setQueueAttributes:(AWSSQSSetQueueAttributesRequest *)request completionHandler:(void (^ _Nullable)(NSError * _Nullable error))completionHandler;

/**
 <p>Starts an asynchronous task to move messages from a specified source queue to a specified destination queue.</p><note><ul><li><p>This action is currently limited to supporting message redrive from dead-letter queues (DLQs) only. In this context, the source queue is the dead-letter queue (DLQ), while the destination queue can be the original source queue (from which the messages were driven to the dead-letter-queue), or a custom destination queue. </p></li><li><p>Currently, only standard queues are supported.</p></li><li><p>Only one active message movement task is supported per queue at any given time.</p></li></ul></note>
 
 @param request A container for the necessary parameters to execute the StartMessageMoveTask service method.

 @return An instance of `AWSTask`. On successful execution, `task.result` will contain an instance of `AWSSQSStartMessageMoveTaskResult`. On failed execution, `task.error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorResourceNotFound`, `AWSSQSErrorUnsupportedOperation`.
 
 @see AWSSQSStartMessageMoveTaskRequest
 @see AWSSQSStartMessageMoveTaskResult
 */
- (AWSTask<AWSSQSStartMessageMoveTaskResult *> *)startMessageMoveTask:(AWSSQSStartMessageMoveTaskRequest *)request;

/**
 <p>Starts an asynchronous task to move messages from a specified source queue to a specified destination queue.</p><note><ul><li><p>This action is currently limited to supporting message redrive from dead-letter queues (DLQs) only. In this context, the source queue is the dead-letter queue (DLQ), while the destination queue can be the original source queue (from which the messages were driven to the dead-letter-queue), or a custom destination queue. </p></li><li><p>Currently, only standard queues are supported.</p></li><li><p>Only one active message movement task is supported per queue at any given time.</p></li></ul></note>
 
 @param request A container for the necessary parameters to execute the StartMessageMoveTask service method.
 @param completionHandler The completion handler to call when the load request is complete.
                          `response` - A response object, or `nil` if the request failed.
                          `error` - An error object that indicates why the request failed, or `nil` if the request was successful. On failed execution, `error` may contain an `NSError` with `AWSSQSErrorDomain` domain and the following error code: `AWSSQSErrorResourceNotFound`, `AWSSQSErrorUnsupportedOperation`.
 
 @see AWSSQSStartMessageMoveTaskRequest
 @see AWSSQSStartMessageMoveTaskResult
 */
- (void)startMessageMoveTask:(AWSSQSStartMessageMoveTaskRequest *)request completionHandler:(void (^ _Nullable)(AWSSQSStartMessageMoveTaskResult * _Nullable response, NSError * _Nullable error))completionHandler;

/**
 <p>Add cost allocation tags to the specified Amazon SQS queue. For an overview, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-queue-tags.html">Tagging Your Amazon SQS Queues</a> in the <i>Amazon SQS Developer Guide</i>.</p><p>When you use queue tags, keep the following guidelines in mind:</p><ul><li><p>Adding more than 50 tags to a queue isn't recommended.</p></li><li><p>Tags don't have any semantic meaning. Amazon SQS interprets tags as character strings.</p></li><li><p>Tags are case-sensitive.</p></li><li><p>A new tag with a key identical to that of an existing tag overwrites the existing tag.</p></li></ul><p>For a full list of tag restrictions, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-limits.html#limits-queues">Quotas related to queues</a> in the <i>Amazon SQS Developer Guide</i>.</p><note><p>Cross-account permissions don't apply to this action. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-customer-managed-policy-examples.html#grant-cross-account-permissions-to-role-and-user-name">Grant cross-account permissions to a role and a username</a> in the <i>Amazon SQS Developer Guide</i>.</p></note>
 
 @param request A container for the necessary parameters to execute the TagQueue service method.

 @return An instance of `AWSTask`. On successful execution, `task.result` will be `nil`.
 
 @see AWSSQSTagQueueRequest
 */
- (AWSTask *)tagQueue:(AWSSQSTagQueueRequest *)request;

/**
 <p>Add cost allocation tags to the specified Amazon SQS queue. For an overview, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-queue-tags.html">Tagging Your Amazon SQS Queues</a> in the <i>Amazon SQS Developer Guide</i>.</p><p>When you use queue tags, keep the following guidelines in mind:</p><ul><li><p>Adding more than 50 tags to a queue isn't recommended.</p></li><li><p>Tags don't have any semantic meaning. Amazon SQS interprets tags as character strings.</p></li><li><p>Tags are case-sensitive.</p></li><li><p>A new tag with a key identical to that of an existing tag overwrites the existing tag.</p></li></ul><p>For a full list of tag restrictions, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-limits.html#limits-queues">Quotas related to queues</a> in the <i>Amazon SQS Developer Guide</i>.</p><note><p>Cross-account permissions don't apply to this action. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-customer-managed-policy-examples.html#grant-cross-account-permissions-to-role-and-user-name">Grant cross-account permissions to a role and a username</a> in the <i>Amazon SQS Developer Guide</i>.</p></note>
 
 @param request A container for the necessary parameters to execute the TagQueue service method.
 @param completionHandler The completion handler to call when the load request is complete.
                          `error` - An error object that indicates why the request failed, or `nil` if the request was successful.
 
 @see AWSSQSTagQueueRequest
 */
- (void)tagQueue:(AWSSQSTagQueueRequest *)request completionHandler:(void (^ _Nullable)(NSError * _Nullable error))completionHandler;

/**
 <p>Remove cost allocation tags from the specified Amazon SQS queue. For an overview, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-queue-tags.html">Tagging Your Amazon SQS Queues</a> in the <i>Amazon SQS Developer Guide</i>.</p><note><p>Cross-account permissions don't apply to this action. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-customer-managed-policy-examples.html#grant-cross-account-permissions-to-role-and-user-name">Grant cross-account permissions to a role and a username</a> in the <i>Amazon SQS Developer Guide</i>.</p></note>
 
 @param request A container for the necessary parameters to execute the UntagQueue service method.

 @return An instance of `AWSTask`. On successful execution, `task.result` will be `nil`.
 
 @see AWSSQSUntagQueueRequest
 */
- (AWSTask *)untagQueue:(AWSSQSUntagQueueRequest *)request;

/**
 <p>Remove cost allocation tags from the specified Amazon SQS queue. For an overview, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-queue-tags.html">Tagging Your Amazon SQS Queues</a> in the <i>Amazon SQS Developer Guide</i>.</p><note><p>Cross-account permissions don't apply to this action. For more information, see <a href="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-customer-managed-policy-examples.html#grant-cross-account-permissions-to-role-and-user-name">Grant cross-account permissions to a role and a username</a> in the <i>Amazon SQS Developer Guide</i>.</p></note>
 
 @param request A container for the necessary parameters to execute the UntagQueue service method.
 @param completionHandler The completion handler to call when the load request is complete.
                          `error` - An error object that indicates why the request failed, or `nil` if the request was successful.
 
 @see AWSSQSUntagQueueRequest
 */
- (void)untagQueue:(AWSSQSUntagQueueRequest *)request completionHandler:(void (^ _Nullable)(NSError * _Nullable error))completionHandler;

@end

NS_ASSUME_NONNULL_END