question: @ 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 ) ; } }
target:  A method to be called when a node is about to be removed from the tree.