code: public List<String> similarWordsInVocabTo(String word, double accuracy) {
          return this.modelUtils.similarWordsInVocabTo(word, accuracy);
      }
docs: Find all words with a similar characters
  in the vocab
  @param word the word to compare
  @param accuracy the accuracy: 0 to 1
  @return the list of words that are similar in the vocab