/**
  * @param mixed $wordList
  * @param float $threshold parameter between 0 and 1
  * @return \Absolvent\FuzzyText\WordListInterface
  */
 public function normalizeWordList($wordList, $threshold = self::DEFAULT_WORD_LIST_THRESHOLD)
 {
     $wordList = WordList::fromAnything($wordList);
     $normalizedWordList = new WordList();
     foreach ($wordList as $word) {
         $word = $this->normalizeWord($word);
         $normalizedWordList->addWord($word);
     }
     return $normalizedWordList;
 }