code: function belongsToArea(suggestion, instance){
      var parentSuggestion = instance.selection,
          result = parentSuggestion && parentSuggestion.data && instance.bounds;
  
      if (result) {
          collection_util.each(instance.bounds.all, function (bound, i) {
              return (result = parentSuggestion.data[bound] === suggestion.data[bound]);
          });
      }
      return result;
  }
docs: Compares two suggestion objects
  @param suggestion
  @param instance other Suggestions instance