code: function unionizeListEvents(that, internalObservees, propertyList, collapse) {
      for(var n=0; n<internalObservees.length; n++) {
          unionizeEvents(that, internalObservees[n].obj, propertyList.concat(internalObservees[n].index+''), collapse)
      }
  }
docs: runs unionizeEvents for elements in a list internalObservees should be the result from `unionizeList`