public static String sanitize(final String s) {
        return s.replace(':', '-')
                .replace('_', '-')
                .replace('.', '-')
                .replace('/', '-')
                .replace('\\', '-');
    }
@Test
    public void testSimpleSanitized() {
        String out = StringHelper.sanitize("hello");
        assertEquals(-1, out.indexOf(':'), "Should not contain : ");
        assertEquals(-1, out.indexOf('.'), "Should not contain . ");
    }