protected static Set<String> newHashSet(String... strings) {
        final Set<String> set = new HashSet<>(strings.length);
        Collections.addAll(set, strings);
        return set;
    }
@Test
    public void testNewHashSet() {
        Set<String> result = AbstractFileTypeAnalyzer.newHashSet("one", "two");
        assertEquals(2, result.size());
        assertTrue(result.contains("one"));
        assertTrue(result.contains("two"));
    }