[TestMethod]
public void LocatingElementInsideAnotherElementTest()
{
    var mainElement = _driver.FindElementByIosNsPredicate("type == \"XCUIElementTypeApplication\" AND name == \"TestApp\"");

    var numberOne = mainElement.FindElementById("IntegerA");
    var numberTwo = mainElement.FindElementById("IntegerB");
    var compute = mainElement.FindElementByName("ComputeSumButton");
    var answer = mainElement.FindElementByName("Answer");

    numberOne.Clear();
    numberOne.SetImmediateValue("5");
    numberTwo.Clear();
    numberTwo.SetImmediateValue("6");
    compute.Click();

    Assert.AreEqual("11", answer.GetAttribute("value"));
}