code: @Nullable
    private static String getLocalAppDataLocation() {
      String localAppData = System.getenv("LOCALAPPDATA");
      if (localAppData != null) {
        return localAppData + "\\Google\\Cloud SDK\\google-cloud-sdk";
      } else {
        return null;
      }
    }
docs: The default location for a single-user install of Cloud SDK on Windows.