How to use the aioitertools.asyncio.wait function in aioitertools

input_map[args[next_arg]].append(next_arg)
            else:
                # We call ensure_future directly to ensure that we have a Task
                # because the return value of asyncio.wait will be an implicit
                # task otherwise, and we won't be able to know which input it
                # corresponds to.
                task: asyncio.Future[T] = asyncio.ensure_future(args[next_arg])
                pending.add(task)
                pos[task] = next_arg
                input_map[args[next_arg]] = [next_arg]
            next_arg += 1

        # pending might be empty if the last items of args were dupes;
        # asyncio.wait([]) will raise an exception.
        if pending:
            done, pending = await asyncio.wait(
                pending, loop=loop, return_when=asyncio.FIRST_COMPLETED
            )
            for x in done:
                if return_exceptions and x.exception():
                    ret[pos[x]] = x.exception()
                else:
                    ret[pos[x]] = x.result()

        if not pending and next_arg == len(args):
            break

    for lst in input_map.values():
        for i in range(1, len(lst)):
            ret[lst[i]] = ret[lst[0]]

    return ret