Functionality & restrictions /// ///
PUBLIC to retrieve all public channels in the account.
/// AppInstanceAdmin can set privacy = PRIVATE to list
/// the private channels in an account.
/// x-amz-chime-bearer request header is mandatory. Use the AppInstanceUserArn
/// of the user that makes the API call as the value in the header.
/// AppInstance.
/// AppInstanceUserArn of the user that makes the API call.
/// PUBLIC retrieves all the public channels. PRIVATE
/// retrieves private channels. Only an AppInstanceAdmin can retrieve private
/// channels.
///