@Override
	List<Node> getChildren() {
		List<Node> list = new ArrayList<>();
		if (child1 != null) {
			list.add(child1);
		}
		if (child2 != null) {
			list.add(child2);
		}
		return list;
	}
Constructs a new SplitNode from the XML JDOM element
@param elem the XML JDOM element containing the configuration information.
@param mgr the DockingWindowsManager for this node.
@param parent the parent node for this node.
@param restoredPlaceholders the list into which any restored placeholders will be placed
Ghidra/Framework/Docking/src/main/java/docking/SplitNode.java