class QuitGroupHandler extends GroupHandler<WFCMessage.QuitGroupRequest> {
    @Override
    public ErrorCode action(ByteBuf ackPayload, String clientID, String fromUser, ProtoConstants.RequestSourceType requestSourceType, WFCMessage.QuitGroupRequest request, Qos1PublishHandler.IMCallback callback) {<FILL_FUNCTION_BODY>}
}

        boolean isAdmin = requestSourceType == ProtoConstants.RequestSourceType.Request_From_Admin;
        if(request.hasNotifyContent() && request.getNotifyContent().getType() > 0 && requestSourceType == ProtoConstants.RequestSourceType.Request_From_User && !m_messagesStore.isAllowClientCustomGroupNotification()) {
            return ErrorCode.ERROR_CODE_NOT_RIGHT;
        }
        if(request.hasNotifyContent() && request.getNotifyContent().getType() > 0 && requestSourceType == ProtoConstants.RequestSourceType.Request_From_Robot && !m_messagesStore.isAllowRobotCustomGroupNotification()) {
            return ErrorCode.ERROR_CODE_NOT_RIGHT;
        }

        if(requestSourceType == ProtoConstants.RequestSourceType.Request_From_User) {
            int forbiddenClientOperation = m_messagesStore.getGroupForbiddenClientOperation();
            if((forbiddenClientOperation & ProtoConstants.ForbiddenClientGroupOperationMask.Forbidden_Quit_Group) > 0) {
                return ErrorCode.ERROR_CODE_NOT_RIGHT;
            }
        }

        ErrorCode errorCode = m_messagesStore.quitGroup(fromUser, request.getGroupId(), isAdmin);
        if (errorCode == ErrorCode.ERROR_CODE_SUCCESS) {
            if (request.hasNotifyContent() && request.getNotifyContent().getType() > 0) {
                sendGroupNotification(fromUser, request.getGroupId(), request.getToLineList(), request.getNotifyContent());
            } else {
                WFCMessage.MessageContent content = new GroupNotificationBinaryContent(request.getGroupId(), fromUser, null, "").getQuitGroupNotifyContent();
                sendGroupNotification(fromUser, request.getGroupId(), request.getToLineList(), content);
            }

            if((m_messagesStore.getVisibleQuitKickoffNotification() & 0x01) > 0) {
                Set<String> toUsers = m_messagesStore.getGroupManagers(request.getGroupId(), true);
                WFCMessage.MessageContent content = new GroupNotificationBinaryContent(request.getGroupId(), fromUser, null, "").getQuitVisibleGroupNotifyContent();
                sendGroupNotification(fromUser, request.getGroupId(), request.getToLineList(), content, toUsers);
            }
        }
        return errorCode;
    
<methods>public non-sealed void <init>() <variables>