Resources:
  MinimalLayerFunction:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: s3://sam-demo-bucket/hello.zip
      Handler: hello.handler
      Runtime: python2.7
      Layers:
      - arn:aws:lambda:us-east-1:123456789101:layer:CorpXLayer:1

  FunctionNoLayerVersion:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: s3://sam-demo-bucket/hello.zip
      Handler: hello.handler
      Runtime: python2.7
      Layers:
      - arn:aws:lambda:us-east-1:123456789101:layer:CorpXLayer:1

  FunctionLayerWithSubIntrinsic:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: s3://sam-demo-bucket/hello.zip
      Handler: hello.handler
      Runtime: python2.7
      Layers:
      - !Sub arn:${AWS::Partition}:lambda:${AWS::Region}:${AWS::AccountId}:layer:CorpXLayer:1
      - Fn::Sub: arn:${AWS::Partition}:lambda:${AWS::Region}:${AWS::AccountId}:layer:CorpYLayer:1

  FunctionReferencesLayer:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: s3://sam-demo-bucket/hello.zip
      Handler: hello.handler
      Runtime: python2.7
      Layers:
      - !Ref MyLayer

  MyLayer:
    Type: AWS::Serverless::LayerVersion
    Properties:
      ContentUri: s3://sam-demo-bucket/layer.zip