fbcore/src/main/java/com/facebook/common/executors/ConstrainedExecutorService.java [133:155]:
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  @Override
  public void shutdown() {
    throw new UnsupportedOperationException();
  }

  @Override
  public List<Runnable> shutdownNow() {
    throw new UnsupportedOperationException();
  }

  @Override
  public boolean isShutdown() {
    return false;
  }

  @Override
  public boolean isTerminated() {
    return false;
  }

  @Override
  public boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException {
    throw new UnsupportedOperationException();
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fbcore/src/main/java/com/facebook/common/executors/HandlerExecutorServiceImpl.java [30:52]:
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  @Override
  public void shutdown() {
    throw new UnsupportedOperationException();
  }

  @Override
  public List<Runnable> shutdownNow() {
    throw new UnsupportedOperationException();
  }

  @Override
  public boolean isShutdown() {
    return false;
  }

  @Override
  public boolean isTerminated() {
    return false;
  }

  @Override
  public boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException {
    throw new UnsupportedOperationException();
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