{
  "openapi": "3.0.0",
  "info" : {
    "title": "title",
    "version": "0.1"
  },
  "servers": [
    {
      "url": "http://localhost"
    }
  ],
  "paths": {
    "/": {
      "parameters": [
        {
          "name": "id",
          "in": "query",
          "schema": {
            "type": "number"
          }
        },
        {
          "name": "additional",
          "in": "cookie",
          "schema": {
            "type": "string"
          }
        },
        {
          "name": "mySpecial",
          "in": "header",
          "schema": {
            "$ref": "#/components/schemas/SpecialString"
          }
        },
        {
          "$ref": "#/components/parameters/referredString"
        }
      ],
      "post": {
        "operationId": "postRoot",
        "parameters": [
          {
            "name" : "category",
            "in" : "header",
            "schema": {
              "type": "string"
            }
          },
          {
            "name": "id",
            "in": "query",
            "schema": {
              "type": "integer",
              "format": "int64"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Response description"
          }
        }
      },
      "get": {
        "operationId": "getRoot",
        "responses": {
          "200": {
            "description": "Response description"
          }
        }
      },
      "put": {
        "operationId": "putRoot",
        "parameters": [
          {
            "$ref": "#/components/parameters/referredString"
          },
          {
            "name": "id",
            "in": "cookie",
            "schema": {
              "type": "number"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Response description"
          }
        }
      },
      "head": {
        "operationId": "headRoot",
        "description": "This operation is not valid. Just for testing purpose!",
        "parameters": [
          {
            "name": "id",
            "schema": {
              "type": "number"
            }
          },
          {
            "in": "query",
            "schema": {
              "type": "number"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Response description"
          }
        }
      }
    }
  },

  "components": {
    "schemas": {
      "SpecialString": {
        "type": "string",
        "default": "special!"
      }
    },
    "parameters": {
      "referredString": {
        "name": "refString",
        "in": "cookie",
        "schema": {
          "$ref": "#/components/schemas/SpecialString"
        }
      }
    }
  }
}