docs: function (child, parent, oldProperty, newProperty) {
          var childParents = child ? child[parProp] : null;
          if (childParents) {
              for (var index = 0, parentDescription; parentDescription = childParents[index]; index++) {
                  if (parentDescription.parent == parent && parentDescription.property == oldProperty) {
                      parentDescription.property = newProperty;
                      // there should be only one.
                      break;
                  }
              }
          }
      }