code: public void setMusicBrainz(String musicBrainz) {
      if(musicBrainz != null) {
        musicBrainz = musicBrainz.trim();
      }
      this.musicBrainz = musicBrainz;
    }
docs: Set link to MusicBrainz.  Note: Provided only for entities that exist in this
  that exist in this linked data-set.
  
  @param musicBrainz link to MusicBrainz