KAS.KASModulePort.ActionGroupUnplug C# (CSharp) Method

        public void ActionGroupUnplug(KSPActionParam param)
        {
            if (!this.part.packed) {
              if (winchConnected) {
            winchConnected.UnplugHead();
              } else {
            ScreenMessages.PostScreenMessage("There is nothing to unplug !",
                                         5, ScreenMessageStyle.UPPER_CENTER);
              }
            }
        }