class_docstr: Simple featurizer for basic tokenization and gazetteer feature alignment.
code: def featurize_batch(
      self, input_records: Sequence[InputRecord]
  ) -> Sequence[OutputRecord]:
      return [self.featurize(in_record) for in_record in input_records]
  
file_path: pytext/pytext/data/featurizer/simple_featurizer.py
imports: import re
  from typing import List, Optional, Sequence, Tuple
  from pytext.common.constants import VocabMeta
  from pytext.config import ConfigBase
  from pytext.data.featurizer import Featurizer, InputRecord, OutputRecord
label_desc: Use image node_id 4 for calling the SimpleFeaturizer obj's underlying member method code with example usage: obj.featurize_batch(input_records) and returns: unknown