Petstore Test for Swagger

{
  "swagger": "2.0",
  "info": {
    "description": "Hubtel Vend is a platform for retailing consumer
    utilities like airtime topup, internet data, ECG, DSTV, Mobile Money
    and other services directly to your customers.
    You can sign up as a Business, a Financial Institution or a Reseller 
    and earn commissions on your transactions.",
    "version": "1.0.0",
    "title": "Vend API",
    "license": {
      "name": "MIT"
    }
  },
  "host": "api.hubtel.com  ",
  "schemes": [
    "https"
  ],
  "consumes": [
    "application/json"
  ],
  "produces": [
    "application/json"
  ],
  "paths": {
    "/vend/airtime": {
      "get": {
        "summary": "For vending airtime on all networks",
        "parameters": [
          {
            "name": "account",
            "description": "Your DSTV number.",
            "required": false,
            "type": "string",
          },
          {
            "name": "amount",
            "description": "The amount of credit you are buying.",
            "required": false,
            "type": "string",
          }
        ],
        "responses": {
          "200": {
            "description": "An paged array of pets",
            "headers": {
              "x-next": {
                "type": "string",
                "description": "A link to the next page of responses"
              }
            },
            "schema": {
              "$ref": "#/definitions/Pets"
            }
          },
          "default": {
            "description": "unexpected error",
            "schema": {
              "$ref": "#/definitions/Error"
            }
          }
        }
      },
      "post": {
        "summary": "Create a pet",
        "operationId": "createPets",
        "tags": [
          "pets"
        ],
        "responses": {
          "201": {
            "description": "Null response"
          },
          "default": {
            "description": "unexpected error",
            "schema": {
              "$ref": "#/definitions/Error"
            }
          }
        }
      }
    },
    "/pets/{petId}": {
      "get": {
        "summary": "Info for a specific pet",
        "operationId": "showPetById",
        "tags": [
          "pets"
        ],
        "parameters": [
          {
            "name": "petId",
            "in": "path",
            "required": true,
            "description": "The id of the pet to retrieve",
            "type": "string"
          }
        ],
        "responses": {
          "200": {
            "description": "Expected response to a valid request",
            "schema": {
              "$ref": "#/definitions/Pets"
            }
          },
          "default": {
            "description": "unexpected error",
            "schema": {
              "$ref": "#/definitions/Error"
            }
          }
        }
      }
    }
  }
}