ConcurrentHashMultiset<String> cms = ConcurrentHashMultiset.create();
    cms.add("a", 2);
    cms.add("b", 3);

    assertThrows(IllegalArgumentException.class, () -> cms.removeExactly("a", -2));

    assertTrue(cms.removeExactly("a", 0));
    assertEquals(2, cms.count("a"));
    assertTrue(cms.removeExactly("c", 0));
    assertEquals(0, cms.count("c"));

    assertFalse(cms.removeExactly("a", 4));

will rightfully complain it is invalid.\n    // See https://github.com/twbs/bootstrap/issues/32273\n    if (!hrefAttribute || (!hrefAttribute.includes('#') && !hrefAttribute.startsWith('.'))) {\n      return null\n    }\n\n    // Just in case some CMS puts out a full URL with the anchor appended\n    if (hrefAttribute.includes('#') && !hrefAttribute.startsWith('#')) {\n      hrefAttribute = `#${hrefAttribute.split('#')[1]}`\n    }\n\n    selector = hrefAttribute && hrefAttribute !== '#' ? hrefAttribute.trim()...