The value of @BindingParam can be omitted

public MyVM {
  @Command
  public void handle(@BindingParam("format") String format, 
                     @BindingParam("price") double price, 
                     @BindingParam("id") int id) {
    // omitted
  }
}

public MyVM {
  @Command
  public void handle(@BindingParam String format, 
                     @BindingParam double price, 
                     @BindingParam int id) {
    // omitted
  }
}