class_docstr: WordSparseTensorGenerator generates string tf.SparseTensor with string
  length similar to a word.
class_docstr_tok: ["WordSparseTensorGenerator","generates","string","tf.SparseTensor","with","string","length","similar","to","a","word","."]
code: def hash_code(self):
      hash_code = super().hash_code()
      m = hashlib.sha256()
      m.update(hash_code.encode())
      m.update(int_to_bytes(self._avg_length))
      return m.hexdigest()
  
imports: import enum
  import random
  import hashlib
  import numpy
  import tensorflow
  from tests.test_atds_avro.utils.generator.generator_base import Generator
  from tests.test_atds_avro.utils.hash_util import int_to_bytes
label_desc: Use image node_id 3 for calling the WordSparseTensorGenerator obj's underlying member method code with example usage: obj.hash_code() and returns: m