// import { SignalService } from '../../../../../../protobuf'; // import { GroupMessage, GroupMessageParams } from './GroupMessage'; // interface GroupMemberLeftMessageParams extends GroupMessageParams {} // export class GroupMemberLeftMessage extends GroupMessage { // constructor(params: GroupMemberLeftMessageParams) { // super(params); // } // public dataProto(): SignalService.DataMessage { // const dataMessage = new SignalService.DataMessage(); // dataMessage.groupMessage = super.groupMessage(); // dataMessage.groupMessage.memberLeftMessage = new SignalService.GroupMemberLeftMessage(); // return dataMessage; // } // }