FileTranslation::getLanguage

protected FileTranslation::getLanguage($langcode)

protected function getLanguage($langcode) {
  // If the given langcode was selected, there should be at least one .po
  // file with its name in the pattern drupal-$version.$langcode.po.
  // This might or might not be the entire filename. It is also possible
  // that multiple files end with the same suffix, even if unlikely.
  $files = $this->findTranslationFiles($langcode);

  if (!empty($files)) {
    return $this->filesToArray($langcode, $files);
  }
  else {
    return array();
  }
}