func iOSDeviceFamily() {
let family = Device.family()
switch family {
case .iPodtouch:
print("Device belong to \(family) family")
case .iPhone:
print("Device belong to \(family) family")
case .iPad:
print("Device belong to \(family) family")
case .simulator:
print("Device belong to \(family) family")
case .unknown:
print("unknown Device.")
}
}