@Theory
    public void shouldOverwriteValueWhenUsingPut(int size) {
        Set<Entry<String, String>> expected = expected(ent("x", "foo"));

        CaseInsensitiveStringMultiMap actual = new CaseInsensitiveStringMultiMap(size);
        actual.add("x", "y").add("x", "z").put("x", "foo");

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