partial void Deletesns_user(sns_user instance);
partial void Updatesns_user(sns_user instance);
private void detach_sns_users(sns_user entity) { this.SendPropertyChanging(); entity.sns_type = null; }
partial void Insertsns_user(sns_user instance);
private void attach_sns_users(sns_user entity) { this.SendPropertyChanging(); entity.sns_type = this; }