def METHOD_NAME(self):
    """Load the utterance label map content.
    In vector domain, we call the utterance label as speaker label.
    The speaker label is real speaker label in speaker verification domain,
    and in language identification is language label.
    """
    if not self.label2id_path:
        logger.warning("No speaker id to label file")
        return
    with open(self.label2id_path, 'r') as f:
        for line in f.readlines():
            label_name, label_id = line.strip().split(' ')
            self.label2id[label_name] = int(label_id)
            self.id2label[int(label_id)] = label_name