* addSuppressed(Throwable) mechanism.
   */
  private static final Suppressor SUPPRESSING_SUPPRESSOR =
      (closeable, thrown, suppressed) -> {
        // ensure no exceptions from addSuppressed
        if (thrown == suppressed) {
          return;
        }
        try {
          thrown.addSuppressed(suppressed);
        } catch (Throwable e) {
          /*

   */
  private void assertSuppressed(Suppression... expected) {
    assertEquals(ImmutableList.copyOf(expected), suppressor.suppressions);
  }

  // TODO(cpovirk): Just use addSuppressed+getSuppressed now that we can rely on it.
  /** Suppressor that records suppressions. */
  private static class TestSuppressor implements Closer.Suppressor {

   */
  private void assertSuppressed(Suppression... expected) {
    assertEquals(ImmutableList.copyOf(expected), suppressor.suppressions);
  }

  // TODO(cpovirk): Just use addSuppressed+getSuppressed now that we can rely on it.
  /** Suppressor that records suppressions. */
  private static class TestSuppressor implements Closer.Suppressor {

        assertNull(exception.getCause());

        // Test that suppression is enabled
        RuntimeException suppressed = new RuntimeException("Suppressed exception");
        exception.addSuppressed(suppressed);
        assertEquals(1, exception.getSuppressed().length);
        assertEquals(suppressed, exception.getSuppressed()[0]);
    }

    @Test

        if (throwable != null) {
          if (throwable !is IOException) throw throwable
          if (firstException == null) {
            firstException = throwable
          } else {
            firstException.addSuppressed(throwable)
          }
        }

        val nextPlan = connectResult.nextPlan
        if (nextPlan != null) {
          // Try this plan's successor before deferred plans because it won the race!

        ResultOffsetExceededException suppressedException = new ResultOffsetExceededException("Suppressed exception");

        mainException.addSuppressed(suppressedException);

        Throwable[] suppressed = mainException.getSuppressed();
        assertNotNull(suppressed);
        assertEquals(1, suppressed.length);

        ContentNotFoundException exception = new ContentNotFoundException(parentUrl, url);

        // Verify that suppression is disabled
        try {
            exception.addSuppressed(new Exception("Test suppressed"));
            // If suppression is disabled, getSuppressed should return empty array
            assertEquals(0, exception.getSuppressed().length);
        } catch (Exception e) {

          out = transfer;
        } catch (IOException e) {
          if (transfer != null) {
            try {
              transfer.close();
            } catch (IOException closeException) {
              e.addSuppressed(closeException);
            }
          }
          temp.delete();
          throw e;
        }

        file = temp;
        memory = null;
      }
    }
  }

                    + Multimaps.filterKeys(servicesByState, not(equalTo(RUNNING))));
        for (Service service : servicesByState.get(State.FAILED)) {
          exception.addSuppressed(new FailedService(service));
        }
        throw exception;
      }
    }
  }

  /**
   * A {@link Service} that wraps another service and times how long it takes for it to start and

      try {
        stream.close();
      } catch (Exception e) { // sneaky checked exception
        if (exception == null) {
          exception = e;
        } else {
          exception.addSuppressed(e);
        }
      }
    }
    if (exception != null) {
      // Normally this is a RuntimeException that doesn't need sneakyThrow.
      // But theoretically we could see sneaky checked exception