protected FSBFileNode findMatchingNode(GFile f, TaskMonitor monitor) throws CancelledException {
		loadChildrenIfNeeded(monitor);
		for (GTreeNode treeNode : children()) {
			if (treeNode instanceof FSBFileNode fileNode) {
				if (fileNode.file.equals(f)) {
					return fileNode;
				}
			}
		}
		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