onAttributesChangedOfGroupMember property
final
      ~english Occurs when a custom attribute(s) of a group member is/are changed.
Param groupId The group ID.
Param userId The user ID of the group member whose custom attributes are changed.
Param attributes The modified custom attributes, in key-value format.
Param operatorId The user ID of the operator.
~end
~chinese 群组成员自定义属性有变更。
Param groupId 群组 ID。
Param userId 自定义属性变更的群成员的用户 ID。
Param attributes 修改后的自定义属性,key-value 格式。
Param operatorId 操作者的用户 ID。
~end
Implementation
final void Function(
  String groupId,
  String userId,
  Map<String, String>? attributes,
  String? operatorId,
)? onAttributesChangedOfGroupMember;