//Create a class for battery package Battery import Timer.SimulatedTimer public class Battery { private String id private String label private String displayName private String battery private String currentBattery Battery(String id, String label, String displayName, String battery) { this.id = id this.label = label this.displayName = displayName this.battery = battery this.currentBattery = battery } //By Model Checker def setValue(String value) { println("the battery level with id:$id is changed to $value!") this.battery = value.toInteger() this.currentBattery = value.toInteger() } def currentValue(String deviceFeature) { if (deviceFeature == "battery") { return battery } } }