private function outputWebspacePageTemplates(Webspace $webspace)
    {
        $this->output->writeln('Page Templates:');

        $structures = $this->structureManager->getStructures();

        $checkedTemplates = [];

        foreach ($webspace->getDefaultTemplates() as $template) {
            $checkedTemplates[] = $template;
        }

        foreach ($structures as $structure) {
            $template = $structure->getKey();

            if (!$structure->getInternal() && !in_array($template, $checkedTemplates)) {
                $this->validatePageTemplate('page', $structure->getKey());
            }
        }
    }