getOS method

Implementation

String getOS() {
  if(Platform.isWindows) {
    return "windows";
  }
  if(Platform.isLinux) {
    return "linux";
  }
  if(Platform.isMacOS) {
    return "osx";
  }
  if(Platform.isIOS) {
    return "ios";
  }
  if(Platform.isAndroid) {
    return "android";
   }
  if(Platform.isFuchsia) {
    return "fuchsia";
  }
  return null;
}