@Override
  public final String getVersionString(final @NotNull String sdkHome) {
    JdkVersionDetector.JdkVersionInfo jdkInfo = SdkVersionUtil.getJdkVersionInfo(sdkHome);
    return jdkInfo != null ? JdkVersionDetector.formatVersionString(jdkInfo.version) : null;
  }
@Override
  public final String getVersionString(final @NotNull String sdkHome)