initPlatformInstance function

Implementation

void initPlatformInstance() {
  if (!kIsWeb) {
    if (BitsdojoWindowPlatform.instance is MethodChannelBitsdojoWindow) {
      if (Platform.isWindows) {
        BitsdojoWindowPlatform.instance = BitsdojoWindowWindows();
      } else if (Platform.isMacOS) {
        BitsdojoWindowPlatform.instance = BitsdojoWindowMacOS();
      } else if (Platform.isLinux) {
        BitsdojoWindowPlatform.instance = BitsdojoWindowLinux();
      }
    }
  } else {
    BitsdojoWindowPlatform.instance = BitsdojoWindowPlatformNotImplemented();
  }
}