protected static function validateField($fieldObject)
    {
        $selectable = true;

        // If not a selectable field
        if(isset($fieldObject->config['selectable']) && $fieldObject->config['selectable'] === false)
        {
            $selectable = false;
        }

        if(isset($fieldObject->config['privacy']))
        {
            $privacyClass = $fieldObject->config['privacy'];

            // If privacy given as a closure
            if(is_callable($privacyClass) && call_user_func($privacyClass, self::$args) === false)
            {
                $selectable = null;
            }
            // If Privacy class given
            elseif(is_string($privacyClass))
            {
                if(array_has(self::$privacyValidations, $privacyClass))
                {
                    $validated = self::$privacyValidations[$privacyClass];
                }
                else
                {
                    $validated = call_user_func([app($privacyClass), 'fire'], self::$args);
                    self::$privacyValidations[$privacyClass] = $validated;
                }

                if( ! $validated)
                {
                    $selectable = null;
                }
            }
        }

        return $selectable;
    }