@TestOnly
  public boolean awaitNettyThreadPoolTermination(long time, @NotNull TimeUnit unit) {
    ExternalJavacManager externalJavacManager = myExternalJavacManager;
    return externalJavacManager == null || externalJavacManager.awaitNettyThreadPoolTermination(time, unit);
  }
@TestOnly
  public boolean awaitNettyThreadPoolTermination(long time, @NotNull TimeUnit unit)