Resource.yaml

ProxyResource:
    Type: 'AWS::ApiGateway::Resource'
    Properties:
      RestApiId: !Ref ApiGatewayRestApi
      ParentId: !GetAtt ApiGatewayRestApi.RootResourceId
      PathPart: !Ref "apiResourcePath"

  ProxyResourceANY:
    Type: 'AWS::ApiGateway::Method'
    Properties:
      RestApiId: !Ref ApiGatewayRestApi
      ResourceId: !Ref ProxyResource
      HttpMethod: GET
      ApiKeyRequired: true
      AuthorizationType: NONE
      OperationName: !Ref "apiResourcePath"
      Integration:
        Type: AWS_PROXY
        IntegrationHttpMethod: POST
        Uri: !Sub 'arn:aws:apigateway:${AWS::Region}:lambda:path/2015-03-31/functions/${LambdaFunction.Arn}/invocations'