how can I mock multiple API calls inside a function?

  async createData(data) {
      const metaData = await this._dataService.getDataById(dataId).toPromise();
      if (metaData.hasOwnProperty('createData')) {    
        const userData = await this._dataService.getUserDataById(metaData.createData.id).toPromise();
        // some logic           
        }
        // some more logic  }