json_schema: {
      "additionalProperties": false,
      "description": "Schema for a Google Analytics enhanced e-commerce product impression list entity",
      "properties": {
          "index": {
              "maximum": 200,
              "minimum": 1,
              "type": "integer"
          },
          "name": {
              "type": [
                  "string",
                  "null"
              ]
          }
      },
      "self": {
          "format": "jsonschema",
          "name": "product_impression_list",
          "vendor": "com.google.analytics.measurement-protocol",
          "version": "1-0-0"
      },
      "type": "object"
  }