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;
}