public void dataTypeChanged() {
		toolTipText = null;
		fireNodeChanged();
		GTree tree = getTree();
		if (tree != null) {
			tree.repaint(); // need to repaint in case related datatypes changes mod status.
		}
	}
Returns true if this dataType node uses and editor that is different than Java's default
editor.

@return true if this dataType node has a custom editor.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/datamgr/tree/DataTypeNode.java