internal VoiceCommanderPassiveState(VoiceCommander commander)
     : base(commander)
 {
     Status = "Say \"Hey, Smart Glass!\" to enter commanding mode.";
 }
 internal VoiceCommanderActiveState(VoiceCommander commander)
     : base(commander)
 {
     Status = "Please say a command.";
 }
 internal VoiceCommanderAbstractState(VoiceCommander commander)
 {
     _Commander = commander;
 }