public function checkIsContainerConfigurable()
    {
        // Find class with correct interface
        foreach ($this->classes as $classPath => $className) {
            $reflectionClass = new \ReflectionClass($className);
            // If class implements correct interface then it is container configurable
            if (in_array($this::$containerConfigurableInterface, $reflectionClass->getInterfaceNames(), true)) {
                $this->isContainerConfigurable = true;
                $this->containerConfigurableClassName = $className;
            }
        }
    }