@Test
public void testNullSearch() throws Exception {

    search = new ExactMatcherSearch<>( new ExactMatcher(KeyDefinition.newKeyDefinition().withId("value" ).build(),
                                                        null ),
                                       map );
    MultiMap<Value, Object, List<Object>> search1 = search.search();
    assertEquals( "I am null", search1.get( new Value( null ) ).get( 0 ) );
}