public function variable($subject, $options = []) : Inspector
    {
        // Init.----------------------------------------------------------------
        $this->loadDependencies();

        // Business.------------------------------------------------------------

        $options['kind'] = 'variable';
        $class_inspector = static::CLASS_INSPECTOR;
        /** @var Inspector */
        return new $class_inspector(
            $this,
            $subject,
            $options
        );
    }