class_docstr: Dummy wrapper.
code: def do_stuff(self) -> str:
      return self.arg_b
  
file_path: maze/maze/test/core/wrappers/dummy_wrappers/dummy_wrapper_b.py
imports: from typing import Union
  import gym
  from maze.core.wrappers.wrapper import Wrapper
  from maze.test.core.wrappers.dummy_wrappers.dummy_wrappers import DummyWrapper
label_desc: Use image node_id 2 for calling the DummyWrapperB obj's underlying member method code with example usage: obj.do_stuff() and returns: self