// don't execute 'immediately'.  By checking isDone here we avoid that.
    // A corollary to all that is that we don't need to check isDone inside the loop because if we
    // get into the loop we know that we weren't done when we entered and therefore we aren't under
    // an obligation to execute 'immediately'.
    if (!isDone()) {
      Listener oldHead = listeners;

    // don't execute 'immediately'.  By checking isDone here we avoid that.
    // A corollary to all that is that we don't need to check isDone inside the loop because if we
    // get into the loop we know that we weren't done when we entered and therefore we aren't under
    // an obligation to execute 'immediately'.
    if (!isDone()) {
      Listener oldHead = listeners;

      }

      @Override
      public boolean isCancelled() {
        return input.isCancelled();
      }

      @Override
      public boolean isDone() {
        return input.isDone();
      }

      @Override
      public O get() throws InterruptedException, ExecutionException {
        return applyTransformation(input.get());
      }

      @Override

	p := tri(231)
	p.Sub(p, intOne)
	p.Sub(p, intOne) // tri(231) - 2 is a prime == 5 mod 8
	x := new(Int).SetUint64(7)
	for i := 0; i < b.N; i++ {
		x.SetUint64(7)
		x.modSqrtTonelliShanks(x, p)
	}
}

func BenchmarkModSqrt231_5Mod8(b *testing.B) {
	p := tri(231)
	p.Sub(p, intOne)
	p.Sub(p, intOne) // tri(231) - 2 is a prime == 5 mod 8
	x := new(Int).SetUint64(7)

      }

      @Override
      public boolean isCancelled() {
        return input.isCancelled();
      }

      @Override
      public boolean isDone() {
        return input.isDone();
      }

      @Override
      public O get() throws InterruptedException, ExecutionException {
        return applyTransformation(input.get());
      }

      @Override

                  }
                }),
            executor);
    ListenableFuture<?> statusFuture = closingFuture.statusFuture();
    waiter.awaitStarted();
    assertThat(statusFuture.isDone()).isFalse();
    waiter.awaitReturned();
    assertThat(getUninterruptibly(statusFuture)).isNull();
  }

  public void testStatusFuture_failure() throws Exception {
    ClosingFuture<String> closingFuture =

                  }
                }),
            executor);
    ListenableFuture<?> statusFuture = closingFuture.statusFuture();
    waiter.awaitStarted();
    assertThat(statusFuture.isDone()).isFalse();
    waiter.awaitReturned();
    assertThat(getUninterruptibly(statusFuture)).isNull();
  }

  public void testStatusFuture_failure() throws Exception {
    ClosingFuture<String> closingFuture =

				"audio/rtp-midi",
				"audio/rtx",
				"audio/smv",
				"audio/smv0",
				"audio/smv-qcp",
				"audio/sp-midi",
				"audio/t140c",
				"audio/t38",
				"audio/telephone-event",
				"audio/tone",
				"audio/ulpfec",
				"audio/vdvi",
				"audio/vmr-wb",
				"audio/vnd.3gpp.iufp",
				"audio/vnd.4sb",
				"audio/vnd.audiokoz",
				"audio/vnd.adobe.soundbooth",
				"audio/vnd.celp",