# File lib/rbrainz/model/default_factory.rb, line 24
      def new_entity(entity_type)
        case entity_type
          when Artist.entity_type
            new_artist
          when Label.entity_type
            new_label
          when ReleaseGroup.entity_type
            new_release_group
          when Release.entity_type
            new_release
          when Track.entity_type
            new_track
        end
      end