private void detach_roles(roles entity)
 {
     this.SendPropertyChanging();
     entity.personas = null;
 }
 private void attach_roles(roles entity)
 {
     this.SendPropertyChanging();
     entity.personas = this;
 }
 partial void Updateroles(roles instance);
 partial void Deleteroles(roles instance);
 partial void Insertroles(roles instance);