protected override void TearDownMember(int index, object member, object tag)
            {
                Group group = (Group)member;

                if (group != null)
                {
                    Message message = new ParticipantGroupRemovedMessage(group);
                    this.m_Service.m_Sender.Send(message);
                }
            }
            protected override void TearDownMember(int index, object member, object tag)
            {
                Group group = (Group)member;

                if (group != null) {
                    Message message = new ParticipantGroupRemovedMessage(group);
                    this.m_Service.m_Sender.Send(message);
                }
            }