@Override
            public void describeTo(Description description) {
                description.appendText("with hint: ");
                stringMatcher.describeTo(description);
            }
A custom matcher that checks the hint property of an {@link android.widget.EditText}. It
accepts either a {@link String} or a {@link org.hamcrest.Matcher}.
runner/AndroidJunitRunnerSample/app/src/androidTest/java/com/example/android/testing/androidjunitrunnersample/HintMatcher.java