assertEquals(Tree.Status.NEW, tree.getChild("new").getStatus());
root.commit();
assertEquals(Tree.Status.EXISTING, tree.getChild("new").getStatus());
Tree added = tree.getChild("new");
added.addChild("another");
assertEquals(Tree.Status.MODIFIED, tree.getChild("new").getStatus());
root.commit();
assertEquals(Tree.Status.EXISTING, tree.getChild("new").getStatus());
tree.getChild("new").getChild("another").remove();