class_docstr: A dummy "custom" policy to test out custom_objects
code: def __init__(
      self,
      sess,
      ob_space,
      ac_space,
      n_env,
      n_steps,
      n_batch,
      reuse=False,
      **_kwargs,
  ):
      super(CustomMlpPolicy, self).__init__(
          sess,
          ob_space,
          ac_space,
          n_env,
          n_steps,
          n_batch,
          reuse,
          feature_extraction="mlp",
          **_kwargs,
      )
  
file_path: stable-baselines/tests/test_save.py
imports: import os
  from io import BytesIO
  import json
  import zipfile
  import pytest
  import numpy
  from stable_baselines import A2C, ACER, ACKTR, DQN, PPO1, PPO2, TRPO
  from stable_baselines.common.identity_env import IdentityEnv
  from stable_baselines.common.vec_env import DummyVecEnv
  from stable_baselines.common.evaluation import evaluate_policy
  from stable_baselines.common.policies import MlpPolicy, FeedForwardPolicy
label_desc: Use image node_id 1 to create a new CustomMlpPolicy object from inherited base classes: FeedForwardPolicy with example: obj = CustomMlpPolicy(sess, ob_space, ac_space, n_env, n_steps, n_batch, reuse)