final void assertAllTestCasesHaveRequiredElements(final Xpp3Dom results) {
        new ForAllTestCases(results) {
            @Override
            void apply(Xpp3Dom each) {
                for (final String requiredElement : REQUIRED_ELEMENTS) {
                    assertHasExactlyOneNamedNonEmptyElement(each, requiredElement);
                }
            }
        }.run();
    }