Text empty = new Text("");
Text nonempty = new Text("value");
parent.appendChild(nonempty);
parent.appendChild(empty);
Nodes result2 = parent.query("/*[count(node())=1]");
assertEquals(1, result2.size());
assertEquals(parent, result2.get(0));
Nodes nodes1 = parent.query("node()[1]");
assertEquals(2, nodes1.size());