There just has to be a better way to insert a link to an alternative translation than this:

function THEME_preprocess_node(&$  variables) {    $  node = &$  variables['node'];    // Current language   $  current_language = \Drupal::languageManager()->getCurrentLanguage()->getId();   $  variables['current_language'] = $  current_language;   $  variables['current_language_url'] = $  node->toUrl()->toString();    // If this is a multi-lingual node, get links to alternative language.   $  languages = $  node->getTranslationLanguages();   foreach ($  languages AS $  langcode => $  language) {     $  node_ja = ($  langcode == 'ja') ? $  node->getTranslation('ja') : null;     if ($  node_ja && is_object($  node_ja) && $  current_language == 'en') {       $  node_url = $  node_ja->toUrl()->toString();       $  variables['node_url_ja'] = $  node_url;       $  variables['node_url_ja_translation'] = '<a href="' . $  node_url . '">Japanese</a>';     }      $  node_en = ($  langcode == 'en') ? $  node->getTranslation('en') : null;     if ($  node_en && is_object($  node_en) && $  current_language == 'ja') {       $  node_url = $  node_en->toUrl()->toString();       $  variables['node_url_en'] = $  node_url;       $  variables['node_url_en_translation'] = '<a href="' . $  node_url . '">English</a>';     }    }    // Display link to alternate translation.   $  variables['node_url_translation'] = ($  current_language == 'en') ? $  variables['node_url_ja_translation'] : $  variables['node_url_en_translation'];  } 

It works, but it’s just not at all graceful. How should this be written? I just want to put in a link like this into a templates/node.html.twig file:

{{ node_url_translation|raw }}