code: @Nullable
      private Integer findDOMNodeCreationPoint(int index) {
          if (stack.getStackDepth() <= index) {
              return null;
          }
  
          return nodeCreations.remove(stack.getStackItem(index));
      }
docs: returns the pc where this DOM Node was created, or null if this isn't a DOM node that was created
  
  @param index
  the index into the stack of the item to be checked
  
  @return the pc where this NODE was created, or null