code: def __init__(self, data=None, lang="", idx=0, sep="|", keyed=True):
      super().__init__(data, lang, idx=idx, sep=sep, keyed=keyed)
  
file_path: stanza/stanza/models/pos/vocab.py
imports: from collections import Counter, OrderedDict
  from stanza.models.common.vocab import BaseVocab, BaseMultiVocab, CharVocab
  from stanza.models.common.vocab import CompositeVocab, VOCAB_PREFIX, EMPTY, EMPTY_ID
label_desc: Use image node_id 1 to create a new FeatureVocab object from inherited base classes: CompositeVocab with example: obj = FeatureVocab(data, lang, idx, sep, keyed)