code: def robotics_arg_parser():
      
      parser = arg_parser()
      parser.add_argument('--env', help='environment ID', type=str, default='FetchReach-v0')
      parser.add_argument('--seed', help='RNG seed', type=int, default=None)
      parser.add_argument('--num-timesteps', type=int, default=int(1e6))
      return parser
docs: Create an argparse.ArgumentParser for run_mujoco.py.