@Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        TracksInPlaylists that = (TracksInPlaylists) o;

        if (playlistId != that.playlistId) return false;
        if (trackId != that.trackId) return false;

        return true;
    }