Cassandra\Type::map PHP Method

    static final function map(Type $key_type, Type $value_type)
    {
    }

 public function testSupportsKeyBasedAccess()
 {
     $map = Type::map(Type::varint(), Type::varchar())->create();
     $this->assertEquals(0, count($map));
     $map->set(new Varint('123'), 'value');
     $this->assertEquals(1, count($map));
     $this->assertTrue($map->has(new Varint('123')));
     $this->assertEquals('value', $map->get(new Varint('123')));
     $map->set(new Varint('123'), 'another value');
     $this->assertEquals(1, count($map));
     $this->assertEquals('another value', $map->get(new Varint('123')));
 }