class_docstr: A dummy gym.spaces.Box multitask environment.
  
  Args:
      random (bool): If observations are randomly generated or not.
      obs_dim (iterable): Observation space dimension.
      action_dim (iterable): Action space dimension.
docstr: list[str]: Return a list of dummy task names.
code: def all_task_names(self):
      """list[str]: Return a list of dummy task names."""
      return ["dummy1", "dummy2", "dummy3"]
  
file_path: garage/tests/fixtures/envs/dummy/dummy_multitask_box_env.py
imports: from random import choices
  from tests.fixtures.envs.dummy import DummyBoxEnv
label_desc: Use image node_id 3 for calling the DummyMultiTaskBoxEnv obj's underlying member method code with example usage: obj.all_task_names() and returns: list