@Override
	int getComponentCount() {
		int n = 0;
		if (child1 != null) {
			n += child1.getComponentCount();
		}
		if (child2 != null) {
			n += child2.getComponentCount();
		}
		return n;
	}
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