@Test
public void findFirstKeyJSONObjectSimple() throws Exception
{

  final String joString = "{\"a\":{\"b\":\"c\"}}";
  JSONObject jo = new JSONObject(joString);
  JSONObject joFind = SchemaUtils.findFirstKeyJSONObject(jo, "a");
  Assert.assertEquals(1, joFind.length());
  Assert.assertEquals("c", joFind.getString("b"));
}