# GroupSource ## Properties Name | Type | Description | Notes ------------ | ------------- | ------------- | ------------- **r#type** | **String** | source type | **group_id** | **String** | Group ID of the source group chat | **user_id** | Option<**String**> | ID of the source user. Only included in message events. Only users of LINE for iOS and LINE for Android are included in userId. | [optional] [[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)