partial void DeleteMusicGroup_Musician(MusicGroup_Musician instance);
partial void UpdateMusicGroup_Musician(MusicGroup_Musician instance);
private void detach_MusicGroup_Musicians(MusicGroup_Musician entity) { this.SendPropertyChanging(); entity.MusicGroup = null; }
partial void InsertMusicGroup_Musician(MusicGroup_Musician instance);
private void attach_MusicGroup_Musicians(MusicGroup_Musician entity) { this.SendPropertyChanging(); entity.Musician = this; }