Hal\Pattern\Resolver\Structural\Facade\FacadeResolver::resolve PHP Method

    public function resolve(ResolvedClass $resolved)
    {
        $class = $resolved->getClass();
        $pattern = new Facade($class->getFullname());
        foreach ($class->getMethods() as $method) {
            $instancied = array_unique($method->getInstanciedClasses());
            // $externalCalls = $method->getExternalCalls();
            // today PhpMetrics is not able to get external calls when they are made on internal propery
            // ex: $this->foo->bar()
            // we will count T_OBJECT_CALL
            if (preg_match_all('!\\->\\w+\\(!', $method->getTokens()->asString(), $matches)) {
                $nbExternalCalls = sizeof($matches[0]);
            }
            if (sizeof($instancied) == 0 && $nbExternalCalls >= 2) {
                $resolved->pushPattern($pattern);
                return;
            }
        }
    }