public function testCreateFromSpecWithArrayWithInstance()
{
$splDoublyLinkedList = new \SplDoublyLinkedList();
$parameterInfo = ReflectionParameter::createFromSpec([$splDoublyLinkedList, 'add'], 'index');
$this->assertInstanceOf(ReflectionParameter::class, $parameterInfo);
$this->assertSame('index', $parameterInfo->getName());
}