Non-proxy catch all endpoint

gistfile1.txt

openapi: "3.0.1"
info:
  title: "vtl-example"
  version: "1.0"
servers:
- url: "https://r5aji4fod4.execute-api.us-west-2.amazonaws.com/{basePath}"
  variables:
    basePath:
      default: "/Prod"
paths:
  /{proxy+}:
    x-amazon-apigateway-any-method:
      parameters:
      - name: "proxy"
        in: "path"
        required: true
        schema:
          type: "string"
      responses:
        "400":
          description: "400 response"
          content: {}
        "200":
          description: "200 response"
          content: {}
      x-amazon-apigateway-integration:
        credentials: "arn:aws:iam::55555555555:role/vtl-example-HelloWorldStateMachineApiEventRole-TT2EO0WZEX69"
        httpMethod: "POST"
        uri: "arn:aws:apigateway:us-west-2:states:action/StartExecution"
        responses:
          "200":
            statusCode: "200"
          "400":
            statusCode: "400"
        requestTemplates:
          application/json: "{\"input\": \"$util.escapeJavaScript($input.json('$'))\"\
            , \"stateMachineArn\": \"arn:aws:states:us-west-2:55555555555:stateMachine:HelloWorldStateMachine-ETKhkDYP8spH\"\
            }"
        passthroughBehavior: "when_no_match"
        type: "aws"
components: {}