Google\Cloud\Tests\Snippets\PubSub\SubscriptionTest::testIam PHP Method

    public function testIam()
    {
        $snippet = $this->snippetFromMethod(Subscription::class, 'iam');
        $snippet->addLocal('subscription', $this->subscription);
        $this->assertInstanceof(Iam::class, $snippet->invoke('iam')->returnVal());
    }