@Override
	public int getDragAction() {
		return DnDConstants.ACTION_COPY_OR_MOVE;
	}
Class to support Drag and Drop; it is also responsible for
rendering the icons, and  for editing a node name.
<p>The nodes that are used in this class are ProgramNode objects.</p>
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/programtree/DragNDropTree.java