code: def _concatenate_custom(space, items, out):
      return tuple(items)
  
file_path: gym/gym/vector/utils/numpy_utils.py
imports: from collections import OrderedDict
  from functools import singledispatch
  from typing import Iterable, Union
  import numpy
  from gym.spaces import Box, Dict, Discrete, MultiBinary, MultiDiscrete, Space, Tuple
label_desc: Use image node_id 5 for calling a global function with example usage: _concatenate_custom(space, items, out) and returns: tuple