authorizer
Authorizer's Uniform Resource Identifier (URI). This must be a well-formed Lambda function URI in the form of arn:aws:apigateway:{region}:lambda:path/{service_api}, e.g., arn:aws:apigateway:us-west-2:lambda:path/2015-03-31/functions/arn:aws:lambda:us-west-2:012345678912:function:my-function/invocations