code: def _derive_session_group_name(trial_id, hparams):
      if trial_id is not None:
          if not isinstance(trial_id, str):
              raise TypeError(
                  "`trial_id` should be a `str`, but got: %r"
                  % (trial_id,)
              )
          return trial_id
      # Use `json.dumps` rather than `str` to ensure invariance under string
      # type (incl. across Python versions) and dict iteration order.
      jparams = json.dumps(
          hparams, sort_keys=True, separators=(",", ":")
      )
      return hashlib.sha256(jparams.encode("utf-8")).hexdigest()
  
imports: import abc
  import hashlib
  import json
  import random
  import time
  import numpy
  from tensorboard.compat import tf2
  from tensorboard.compat.proto import summary_pb2
  from tensorboard.plugins.hparams import api_pb2
  from tensorboard.plugins.hparams import metadata
  from tensorboard.plugins.hparams import plugin_data_pb2
label_desc: Use image node_id 7 for calling a global function with example usage: _derive_session_group_name(trial_id, hparams) and returns: hashlib, trial_id