private void detach_GmailConfigs(GmailConfig entity)
 {
     this.SendPropertyChanging();
     entity.Login = null;
 }
 private void attach_GmailConfigs(GmailConfig entity)
 {
     this.SendPropertyChanging();
     entity.Login = this;
 }
 partial void UpdateGmailConfig(GmailConfig instance);
 partial void DeleteGmailConfig(GmailConfig instance);
 partial void InsertGmailConfig(GmailConfig instance);