code: def use_identity(self):
      return self._use_identity
  
file_path: stanza/stanza/pipeline/lemma_processor.py
imports: from itertools import compress
  import torch
  from stanza.models.common import doc
  from stanza.models.lemma.data import DataLoader
  from stanza.models.lemma.trainer import Trainer
  from stanza.pipeline._constants import *
  from stanza.pipeline.processor import UDProcessor, register_processor
label_desc: Use image node_id 2 for calling the LemmaProcessor obj's underlying member method code with example usage: obj.use_identity() and returns: self