def disabled_for?(object) #:nodoc:
        klass = object.class
        return false unless klass.respond_to?(:observers)
        klass.observers.disabled_for?(self)
      end
def disabled_for?(object) #:nodoc:
        klass = object.class
        return false unless klass.respond_to?(:observers)
        klass.observers.disabled_for?(self)
      end
Returns true if notifications are disabled for this object.