public function testRetainAll()
{
// Remove the following lines when you implement this test.
$this->assertTrue($this->object->retainAll($list = $this->object->subList(2, 8)));
$this->assertTrue($this->object->count() == 6);
$this->assertTrue($this->object->get(0) == 2);
$list = $this->object->subList(2, 4);
$list->add(5468);
$this->assertFalse($this->object->retainAll($list));
}
