Neos\ContentRepository\Tests\Functional\Domain\NodesTest::nodesCanHaveCustomImplementationClass PHP Method

    public function nodesCanHaveCustomImplementationClass()
    {
        $rootNode = $this->context->getRootNode();
        $testingNodeType = $this->nodeTypeManager->getNodeType('Neos.ContentRepository.Testing:NodeTypeWithReferences');
        $happyNodeType = $this->nodeTypeManager->getNodeType('Neos.ContentRepository.Testing:HappyTestingNode');
        $headlineNodeType = $this->nodeTypeManager->getNodeType('Neos.ContentRepository.Testing:Headline');
        $fooNode = $rootNode->createNode('foo', $testingNodeType);
        $happyNode = $fooNode->createNode('bar', $happyNodeType);
        $bazNode = $happyNode->createNode('baz', $headlineNodeType);
        $this->assertNotInstanceOf(HappyNode::class, $fooNode);
        $this->assertInstanceOf(HappyNode::class, $happyNode);
        $this->assertNotInstanceOf(HappyNode::class, $bazNode);
        $this->assertEquals('bar claps hands!', $happyNode->clapsHands());
    }