code: private function addInputScreenTranslations(StaticTranslator $translator, $inputScreen, $containerName)
      {
          $currentLocale = $GLOBALS['TL_LANGUAGE'];
  
          foreach ($inputScreen['legends'] as $legendName => $legendInfo) {
              foreach ($legendInfo['label'] as $langCode => $label) {
                  $translator->setValue(
                      $legendName . '_legend',
                      $label,
                      $containerName,
                      $langCode
                  );
                  if ($currentLocale === $langCode) {
                      $translator->setValue(
                          $legendName . '_legend',
                          $label,
                          $containerName
                      );
                  }
              }
          }
      }
docs: Add the translations for the input screen.
  
  @param StaticTranslator $translator    The translator.
  @param array            $inputScreen   The input screen.
  @param string           $containerName The container name.
  
  @return void
  
  @SuppressWarnings(PHPMD.Superglobals)
  @SuppressWarnings(PHPMD.CamelCaseVariableName)