Resources: MyApi: Type: AWS::Serverless::Api Properties: StageName: MyNewStageName Mode: overwrite TestFunction: Type: AWS::Serverless::Function Properties: Handler: index.handler Runtime: python3.8 AutoPublishAlias: live InlineCode: | def handler(event, context): print("Hello, world!") Events: Put: Type: Api Properties: Path: /put Method: put RestApiId: !Ref MyApi Metadata: SamTransformTest: true