public string MakeCall() { _phone.SetState(_phone.InCallState); return("Success, calling friend..."); }
public string TurnOn() { _phone.SetState(_phone.OnState); return("Success, turning on phone..."); }
public string HangUpCall() { _phone.SetState(_phone.OnState); return("Success, hanging up phone call..."); }
public string TurnOff() { _phone.SetState(_phone.OffState); return("Success, turning phone off..."); }