code: def get_effect_class(self, class_name, package_name=None) -> Type[Effect]:
          
          if package_name:
              return effects.find_effect_class("{}.{}".format(package_name, class_name))
  
          return effects.find_effect_class(class_name)
docs: Get an effect class from the effect registry.
  
          Args:
              class_name (str): The exact class name of the effect
  
          Keyword Args:
              package_name (str): The python path to the effect package the effect name is located.
                                  This is optional and can be used to avoid issue with class name collisions.
  
          Returns:
              Effect class