public PlaylistsRepositoryIdCache(IMetadataRepository metadataRepository, Guid userId, string username, bool getTracks)
        {
            var repositoryDelegate = new PlaylistsRepositoryIdDelegate(userId, username, getTracks);

            repositoryDelegate.Method = repositoryDelegate.CreateMethod(metadataRepository);
            RepositoryDelegate        = repositoryDelegate;
        }
 private bool Equals(PlaylistsRepositoryIdDelegate item)
 {
     return(item != null && this == item);
 }