def get_channels(*channel_ids: str) -> Optional[list[Channel]]:
    params = '?'
    for channel_id in channel_ids:
        params += f'broadcaster_id={channel_id}&'
    http = urllib3.PoolManager()
    r = http.request('GET', (URL.channels.value + params), headers=HEADER)
    if (r.status != 200):
        return None
    data = json.loads(r.data.decode('utf-8'))['data']
    channels: list[Channel] = []
    for channel in data:
        channels.append(Channel(channel['broadcaster_id'], channel['broadcaster_login'], channel['broadcaster_name'], channel['game_name'], channel['game_id'], channel['broadcaster_language'], channel['title'], channel['delay']))
    return channels
def get_channels(*channel_ids: str) -> Optional[list[Channel]]:
    params = '?'
    for channel_id in channel_ids:
        params += f'broadcaster_id={channel_id}&'
    http = urllib3.PoolManager()
    r = http.request('GET', (URL.channels.value + params), headers=HEADER)
    if (r.status != 200):
        return None
    data = json.loads(r.data.decode('utf-8'))['data']
    channels: list[Channel] = []
    for channel in data:
        channels.append(Channel(channel['broadcaster_id'], channel['broadcaster_login'], channel['broadcaster_name'], channel['game_name'], channel['game_id'], channel['broadcaster_language'], channel['title'], channel['delay']))
    return channels