如何获取推送服务push token

import { pushService } from '@kit.PushKit';

private getTokenSyn = async () => {
    try {
      const pushToken = await pushService.getToken();
      hilog.info(0x0000, 'testTag', 'Get push token successfully!');
      this.showFlag = 'Successfully got push token, please save it.';
    } catch (err) {
      this.showFlag = 'Failed to get push token, please check the error log!';
      let e: BusinessError = err as BusinessError;
      hilog.error(0x0000, 'testTag', 'Get push token catch error: %{public}d %{public}s', e.code, e.message);
    }
  }