json_schema: {
      "additionalProperties": false,
      "description": "A click GA4 enhanced-measurement event.",
      "properties": {
          "link_classes": {
              "description": "The classes of the link element.",
              "maxLength": 4096,
              "type": [
                  "string",
                  "null"
              ]
          },
          "link_domain": {
              "description": "The link domain.",
              "maxLength": 4096,
              "type": [
                  "string",
                  "null"
              ]
          },
          "link_id": {
              "description": "The link ID.",
              "maxLength": 500,
              "type": [
                  "string",
                  "null"
              ]
          },
          "link_url": {
              "_format": "uri",
              "description": "The link url.",
              "maxLength": 4096,
              "type": [
                  "string",
                  "null"
              ]
          },
          "outbound": {
              "description": "Whether the link is outbound.",
              "type": [
                  "boolean",
                  "null"
              ]
          }
      },
      "self": {
          "format": "jsonschema",
          "name": "click",
          "vendor": "com.google.ga4.enhanced-measurement",
          "version": "1-0-0"
      },
      "type": "object"
  }