class_docstr: WordTensorGenerator generates string tf.Tensor with string
  length similar to a word.
docstr: Return the hashed code of this Generator in hex str.
docstr_tok: ["Return","the","hashed","code","of","this","Generator","in","hex","str","."]
code: def hash_code(self):
      """Return the hashed code of this Generator in hex str."""
      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 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 WordTensorGenerator obj's underlying member method code with example usage: obj.hash_code() and returns: m