@Override void removingNode(NodeImpl node,NodeImpl oldChild,boolean replace){
  if (iterators != null) {
    notifyIteratorsRemovingNode(oldChild);
  }
  if (ranges != null) {
    notifyRangesRemovingNode(oldChild);
  }
  if (mutationEvents) {
    mutationEventsRemovingNode(node,oldChild,replace);
  }
}

@ Override void removingNode ( NodeImpl node , NodeImpl oldChild , boolean replace ) { if ( iterators != null ) { notifyIteratorsRemovingNode ( oldChild ) ; } if ( ranges != null ) { notifyRangesRemovingNode ( oldChild ) ; } if ( mutationEvents ) { mutationEventsRemovingNode ( node , oldChild , replace ) ; } }
a method to be called when a node is about to be removed from the tree .
