public void AccessViaIndexers()
{
Assert.Equal("Patient.active[0].extension[1].value[0]", patient["active"][0]["extension"][1]["value"][0].Location);
Assert.Equal("Patient.active[0].extension[1].value[0]", patient["active"]["extension"][1]["value"].Single().Location);
Assert.Equal("Patient.active[0].extension[0].value[0]", patient.Children("active").First()
.Children("extension").First()
.Children("value").First().Location);
Assert.Equal("Patient.active[0].extension[0].value[0]", patient.Children("active")
.Children("extension").First()
.Children("value").Single().Location);
}