public void setDragNDropHandler(GTreeDragNDropHandler dragNDropHandler) {
		this.dragNDropHandler = dragNDropHandler;
		new GTreeDragNDropAdapter(this, tree, dragNDropHandler);
	}
Turns tree event notifications on/off

@param b true to enable events, false to disable events
Ghidra/Framework/Docking/src/main/java/docking/widgets/tree/GTree.java