getRestaurants(): Promise<_Restaurant[]> {
    return this.get("/restaurants").toPromise();
  };

loadRestaurants = async () => {
    try {
      this.restaurants  = await this.restaurantService.getRestaurants();
    } catch (exception) {
      console.log(JSON.stringify(exception, null, 2));
    }
  }

async getRestaurants(): Promise<_Restaurant[]> {
    try {
      const response: _Restaurant[] = await this.get("/restaurants").toPromise() as _Restaurant[];
      return response;
    } catch (exception) {
      throw new Error(exception);
    }
  };

loadRestaurants = async () => {
    try {
      this.restaurants  = await this.restaurantService.getRestaurants();
    } catch (exception) {
      console.log(JSON.stringify(exception, null, 2));
    }
  }