@Theory
    public void shouldGetAllValuesForKey(int size) {
        Set<String> expected = expected("foo", "goodbye", "justvalue");

        CaseInsensitiveStringMultiMap mmap = new CaseInsensitiveStringMultiMap(size);
        mmap.add("x", "foo").add("x", "goodbye").add("X", "justvalue");

        Assert.assertEquals(expected, toSet(mmap.getAll("x")));
    }
@author Marc Savy {@literal <msavy@redhat.com>}
gateway/engine/beans/src/test/java/io/apiman/gateway/engine/beans/util/CaseInsensitiveStringMultiMapTest.java