public ArtistRepository(MyMusicDbContext context) : base(context)
 {
 }
 public UserRepository(MyMusicDbContext context) : base(context)
 {
 }
 public UnitOfWork(MyMusicDbContext context)
 {
     this._Context = context;
 }
 public UnitOfWork(MyMusicDbContext context)
 {
     _context = context;
 }