code: func FilterController(controllerInstance interface{}) FilterConfigurator {
  	t := reflect.TypeOf(controllerInstance)
  	for t.Kind() == reflect.Ptr {
  		t = t.Elem()
  	}
  	return newFilterConfigurator(t.Name(), "")
  }
docs: // FilterController returns a configurator for the filters applied to all
  // actions on the given controller instance.  For example:
  //   FilterController(MyController{})