partial void DeleteConversationMember(ConversationMember instance);
 partial void InsertConversationMember(ConversationMember instance);
 partial void UpdateConversationMember(ConversationMember instance);
 private void detach_ConversationMembers(ConversationMember entity)
 {
     this.SendPropertyChanging();
     entity.ConversationItem = null;
 }