code: public function create(string $body, array $toIds, \DateTime $limit = null): array
      {
          return $this->client->post(
              "rooms/{$this->roomId}/tasks",
              [
                  'body' => $body,
                  'to_ids' => implode(',', $toIds),
                  'limit' => $limit instanceof \DateTime ? $limit->getTimestamp() : null,
              ]
          );
      }
docs: @param string         $body
  @param array          $toIds
  @param \DateTime|null $limit
  
  @return int[] task ids