docs: def collect(coro, index, results,
              preserve_order=False,
              return_exceptions=False):
      """
      Collect is used internally to execute coroutines and collect the returned
      value. This function is intended to be used internally.
      """
      result = yield from safe_run(coro, return_exceptions=return_exceptions)
  
      if preserve_order:
          results[index] = result
      else:
          results.append(result)