Returns a list of Sentence objects from the raw text.

def _create_sentence_objects(self):
    '''Returns a list of Sentence objects from the raw text.
    '''
    sentence_objects = []
    sent_tokenizer = SentenceTokenizer(locale=self.language.code)
    seq = Sequence(self.raw)
    seq = sent_tokenizer.transform(seq)
    for start_index, end_index in zip(seq.idx[:-1], seq.idx[1:]):
      # Sentences share the same models as their parent blob
      sent = seq.text[start_index: end_index].strip()
      if not sent: continue
      s = Sentence(sent, start_index=start_index, end_index=end_index)
      s.detected_languages = self.detected_languages
      sentence_objects.append(s)
    return sentence_objects