class_docstr: Seq2Edits for text normalization.
class_docstr_tok: ["Seq2Edits","for","text","normalization","."]
code: def error_tag_vocab_file(self):
      return "vocab.error_tags"
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  from tensor2tensor.data_generators import text_encoder
  from tensor2tensor.data_generators import text_problems
  from tensor2tensor.layers import modalities
  from tensor2tensor.utils import registry
  import tensorflow.compat.v1
label_desc: Use image node_id 4 for calling the Seq2editsTextnorm obj's underlying member method code with example usage: obj.error_tag_vocab_file() and returns: str