private void detach_groups_relation(groups_relation entity) { this.SendPropertyChanging(); entity.user = null; }
partial void Deletegroups_relation(groups_relation instance);
partial void Insertgroups_relation(groups_relation instance);
partial void Updategroups_relation(groups_relation instance);
private void attach_groups_relation(groups_relation entity) { this.SendPropertyChanging(); entity.groups = this; }