docs: def add(self, phrase, id=None):
          """
          Adds a new phrase to the dictionary
          :param phrase: the new phrase as a list of tokens
          :param phrase_id: optionally the phrase_id can be set on addition.  Beware, if you set one id you should set
              them all as the auto-generated ids do not take into account phrase_ids set this way.
          :return: None
          """
          phrase_id = id if id is not None else self.get_next_id()
          PhraseDictionary._add_phrase(phrase, phrase_id, self, self.word_list)
          self.id2phrase[phrase_id] = phrase