code: public function cancel(array $identifiers = []): ?array
      {
          $this->checkConfig();
  
          if (empty($identifiers)) {
              return null;
          }
  
          $messages = [];
          foreach ($identifiers as $id) {
              $messages[] = ['id' => (int) $id];
          }
  
          $body = Body::json($messages);
          $response = Request::post($this->baseUrl.'message/cancel', [], $body);
  
          if ($response->code == 200) {
              return [
                  'code'    => $response->code,
                  'message' => 'OK',
                  'data'    => $response->body,
              ];
          } else {
              if (!empty($response->body->message)) {
                  Log::error($response->body->message);
              }
  
              return [
                  'code'    => $response->code,
                  'message' => $response->body->message ?? '',
                  'data'    => $response->body,
              ];
          }
      }
docs: Cancel queued message.
  
  @return array|null