Jarves\Configuration\Model::checkRequirements PHP Метод

    protected function checkRequirements()
    {
        //make sure requirements are met
        foreach ($this->requiredProperties as $property) {
            if (null === $this->{$property}) {
                throw new \RuntimeException(sprintf('Property `%s` at %s can not be null.', $property, $this->getClass()));
            }
        }
    }