code: def hash(self, obj, return_digest=True):
      try:
          # Pickler.dump will trigger a sequence of self.stream.write(bytes)
          # calls, which will in turn relay to self._hash.update(bytes)
          self.dump(obj)
      except pickle.PicklingError as e:
          e.args += ("PicklingError while hashing %r: %r" % (obj, e),)
          raise
      if return_digest:
          # Read the resulting hash
          return self._hash.hexdigest()
  
imports: import hashlib
  import pickle
  import struct
  import sys
  import tempfile
  import time
  import traceback
  from pathlib import Path
  from typing import TYPE_CHECKING, Union
  from joblib.hashing import Hasher, Pickler
  from joblib.memory import MemorizedFunc, MemorizedResult, Memory, NotMemorizedResult, _format_load_msg, filter_args, format_call, format_signature, format_time, get_func_name
  from xxhash import xxh128
label_desc: Use image node_id 2 for calling the FastHasher obj's underlying member method code with example usage: obj.hash(obj, return_digest) and returns: self