PlatformDevices.empty constructor
      
      PlatformDevices.empty()
     
    
    
Implementation
factory PlatformDevices.empty() {
  return PlatformDevices(
      bcDevices: [],
      beDevices: [],
      bgDevices: [],
      bpDevices: [],
      btDevices: [],
      ddDevices: [],
      msDevices: [],
      ocDevices: [],
      prDevices: [],
      ziDevices: [],
      zlDevices: []);
}