def update_group_dampening(dampening)
      ret = http_put "triggers/groups/#{dampening.trigger_id}/dampenings/#{dampening.dampening_id}", dampening.to_h
      Trigger::Dampening.new(ret)
    end
def update_group_dampening(dampening)
      ret = http_put "triggers/groups/#{dampening.trigger_id}/dampenings/#{dampening.dampening_id}", dampening.to_h
      Trigger::Dampening.new(ret)
    end
Updates a dampening for a group trigger
 @param [Dampening] dampening the dampening to update
 @return [Dampening] the updated dampening