cross-solution / YAWIK

        if (!is_array($options)) {

            $this->router = $options;

            $options = [];

        } else if (isset($options['router'])) {

            $this->router = $options['router'];

            unset($options['router']);

        }

        if (!$this->router) {

            throw new MissingDependencyException('Router', $this);

            $this->setIsDescriptionsEnabled($options['enable_descriptions']);

        }

        if (!isset($options['description']) && null !== $desc) {

            $this->options['description'] = $desc;

        }

        return $this;

    }