cannot import operationId which includes spaces

"get": {
        "description": "Returns a user based on a single ID, if the user does not have access to the pet",
        "operationId": "find pet by id",
        "parameters": [
          {
            "name": "id",
            "in": "path",
            "description": "ID of pet to fetch",
            "required": true,
            "type": "integer",
            "format": "int64"
          }
        ],
        "responses": {
          "200": {
            "description": "pet response",
            "schema": {
              "$ref": "#/definitions/Pet"
            }
          },
          "default": {
            "description": "unexpected error",
            "schema": {
              "$ref": "#/definitions/Error"
            }
          }
        }