@SuppressWarnings("unchecked") public final boolean matches(Object item) { return item != null && expectedType.isInstance(item) && matchesSafely((T) item, new Description.NullDescription()); } @SuppressWarnings("unchecked") @Override public final void describeMismatch(Object item, Description mismatchDescription) { if (item == null || !expectedType.isInstance(item)) { super.describeMismatch(item, mismatchDescription); } else { matchesSafely((T) item, mismatchDescription); } } } org/hamcrest/TypeSafeMatcher.java...