AWS API Gateway REST API to return a list of IP addresses (Swagger)

aws_api_gateway_ip_list.json

{
  "swagger": "2.0",
  "info": {
    "version": "2019-10-28T15:48:36Z",
    "title": "ReturnIPList"
  },
  "host": “aabbccddeeff.execute-api.us-east-2.amazonaws.com",
  "basePath": “/prod”,
  "schemes": [
    "https"
  ],
  "paths": {
    "/": {
      "get": {
        "consumes": [
          "application/json"
        ],
        "produces": [
          "text/plain"
        ],
        "responses": {
          "200": {
            "description": "200 response",
            "schema": {
              "$ref": "#/definitions/Empty"
            },
            "headers": {
              "Content-Type": {
                "type": "string"
              }
            }
          }
        },
        "x-amazon-apigateway-integration": {
          "responses": {
            "default": {
              "statusCode": "200",
              "responseParameters": {
                "method.response.header.Content-Type": "'plain/text'"
              },
              "responseTemplates": {
                "text/plain": “1.2.3.4\n22.33.44.55\n”
              }
            }
          },
          "requestTemplates": {
            "application/json": "{\"statusCode\": 200}"
          },
          "passthroughBehavior": "when_no_match",
          "type": "mock"
        }
      }
    }
  },
  "definitions": {
    "Empty": {
      "type": "object",
      "title": "Empty Schema"
    }
  }
}