FileSystemConnector does not correctly handle projections to root

Node root = session.getNode("/fs");
Node folder1 = root.addNode("test", "nt:folder");
System.out.println(folder1.getIdentifier());
session.save();
Node folder2 = root.getNode("test");
System.out.println(folder2.getIdentifier());

Caused by: java.lang.NullPointerException
	at org.modeshape.connector.filesystem.FileSystemConnector.idFor(FileSystemConnector.java:308)
	at org.modeshape.connector.filesystem.FileSystemConnector.updateDocument(FileSystemConnector.java:557)