public void TestTwoDocumentsWithSameDocumentChildTreeAreEqual()
{
Document d1 = new Document().Append("k1", new Document().Append("k2",new Document().Append("k3","foo")));
Document d2 = new Document().Append("k1", new Document().Append("k2", new Document().Append("k3", "foo")));
AreEqual(d1, d2);
}