code: def _tag_equallength(self, equallength):
      self.meta.has_equal_length = parse_bool(equallength)
  
imports: from datetime import datetime
  from distutils.util import strtobool
  from types import SimpleNamespace
  from typing import Dict
  import numpy
  from toolz import compose_left
  from gluonts import json
  from gluonts.exceptions import GluonTSDataError
label_desc: Use image node_id 11 for calling the TSFReader obj's underlying member method code with example usage: obj._tag_equallength(equallength) without return types