public FSBRootNode getFSBRootNode() {
		GTreeNode node = getParent();
		while (node != null) {
			if (node instanceof FSBRootNode rootNode) {
				return rootNode;
			}
			node = node.getParent();
		}
		return null;
	}
Returns the extension of this node's name, or "" if none

@return extension of this node's name, or "" if none
Ghidra/Features/Base/src/main/java/ghidra/plugins/fsbrowser/FSBNode.java