# File lib/rbrainz/model/relation.rb, line 112
      def target_type
        if @target.is_a? Model::Entity
          case @target.entity_type
          when :artist
            return TO_ARTIST
          when :release
            return TO_RELEASE
          when :track
            return TO_TRACK
          when :label
            return TO_LABEL
          end
        elsif not @target.nil?
          return TO_URL
        end  
      end