Nelmio\Alice\Generator\Instantiator\Chainable\NullConstructorInstantiator::createInstance PHP Method

    protected function createInstance(FixtureInterface $fixture)
    {
        $class = $fixture->getClassName();
        try {
            $constructRefl = new \ReflectionMethod($class, '__construct');
            if (false === $constructRefl->isPublic()) {
                throw InstantiationExceptionFactory::createForNonPublicConstructor($fixture);
            }
            if (0 === $constructRefl->getNumberOfRequiredParameters()) {
                return new $class();
            }
            throw InstantiationExceptionFactory::createForConstructorIsMissingMandatoryParameters($fixture);
        } catch (\ReflectionException $exception) {
            // Thrown when __construct does not exist, i.e. is default constructor
            if (1 !== preg_match('/Method (.+)__construct\\(.*\\) does not exist/', $exception->getMessage())) {
                throw InstantiationExceptionFactory::createForCouldNotGetConstructorData($fixture, 0, $exception);
            }
            // Continue
        }
        return new $class();
    }