DetachedWindowNode getDetachedWindowNode() {
		Node node = compNode.parent;
		while (node != null) {
			if (node instanceof DetachedWindowNode) {
				return (DetachedWindowNode) node;
			}
			node = node.parent;
		}
		return null;
	}
True signals that the showing state of the placeholder is true.  This is used to re-show
providers after restoring from XML.
@return True signals that the showing state of the placeholder is true
Ghidra/Framework/Docking/src/main/java/docking/ComponentPlaceholder.java