code: def build_dummy_maze_environment() -> DummyEnvironment:
      """Instantiates a dummy Maze env."""
      observation_conversion = ObservationConversion()
  
      return DummyEnvironment(
          core_env=DummyCoreEnvironment(observation_conversion.space()),
          action_conversion=[DictDiscreteActionConversion()],
          observation_conversion=[observation_conversion],
      )
  
file_path: maze/maze/test/core/wrappers/test_observation_stack_wrapper.py
imports: from copy import deepcopy
  import maze.test.core.wrappers
  from maze.core.wrappers.observation_stack_wrapper import ObservationStackWrapper
  from maze.test.shared_test_utils.config_testing_utils import load_env_config
  from maze.test.shared_test_utils.dummy_env.dummy_core_env import DummyCoreEnvironment
  from maze.test.shared_test_utils.dummy_env.dummy_maze_env import DummyEnvironment
  from maze.test.shared_test_utils.dummy_env.dummy_struct_env import DummyStructuredEnvironment
  from maze.test.shared_test_utils.dummy_env.space_interfaces.action_conversion.dict_discrete import DictDiscreteActionConversion
  from maze.test.shared_test_utils.dummy_env.space_interfaces.observation_conversion.dict import ObservationConversion
label_desc: Use image node_id 1 for calling a global function with example usage: build_dummy_maze_environment() and returns: DummyEnvironment