class_docstr: Mock Algorithm for use in tests.
class_docstr_tok: ["Mock","Algorithm","for","use","in","tests","."]
code: def _get_env_id_and_creator(env_specifier, config):
      # No env to register.
      return None, None
  
imports: import os
  import pickle
  import time
  import numpy
  from ray.tune import result
  from ray.rllib.algorithms.algorithm import Algorithm, AlgorithmConfig
  from ray.rllib.utils.annotations import override
label_desc: Use image node_id 7 for calling the _MockTrainer obj's underlying member method code with example usage: obj._get_env_id_and_creator(env_specifier, config) and returns: None,  None