kevintweber / Groundskeeper

        }

    }

    protected function removeInvalidSelf(LoggerInterface $logger)

    {

        $parent = $this->getParent();

        if ($parent !== null &&

            !$parent instanceof Select &&

            !$parent instanceof Datalist &&

            !$parent instanceof Optgroup) {

            $logger->debug('Removing ' . $this . '. Only "select", "datalist", and "optgroup" elements allowed as parents of "option" element.');

            return true;

        }

        return false;

    }

}

        );

    }

    protected function removeInvalidSelf(LoggerInterface $logger)

    {

        // Child of "picture" element.

        // Child of media element.

        $parent = $this->getParent();

        if ($parent !== null &&

            !$parent instanceof Picture &&

            !$parent instanceof MediaElement) {

            $logger->debug('Removing ' . $this . ' must be a child of "picture" element or a media element.');

            return true;

        }

        return false;

    }

}

        }

    }

    protected function removeInvalidSelf(LoggerInterface $logger)

    {

        // "table" must be parent.

        $parent = $this->getParent();

        if ($parent !== null &&

            !$parent instanceof Thead &&

            !$parent instanceof Tbody &&

            !$parent instanceof Tfoot &&

            !$parent instanceof Table) {

            $logger->debug('Removing ' . $this . '. Must be a child of the "thead", "tbody", "tfoot", or "table" elements.');

            return true;

        }

        return false;

    }

}