rangeSet.add(Range.closed(3, 6));
    rangeSet.remove(Range.closed(6, 9));
    testInvariants(rangeSet);
    assertThat(rangeSet.asRanges()).containsExactly(Range.closedOpen(3, 6));
  }

  public void testRemoveExact() {
    TreeRangeSet<Integer> rangeSet = TreeRangeSet.create();
    rangeSet.add(Range.closed(3, 6));
    rangeSet.remove(Range.closed(3, 6));
    testInvariants(rangeSet);

        throw complete(e)!!
      }
    }

    @Throws(IOException::class)
    override fun close() {
      if (closed) return
      closed = true
      if (contentLength != -1L && bytesReceived != contentLength) {
        throw ProtocolException("unexpected end of stream")
      }
      try {
        super.close()
        complete(null)
      } catch (e: IOException) {
        throw complete(e)!!
      }

        // Need successThreshold (2) consecutive successes to close the circuit
        // Second success should close the circuit (threshold is 2)
        result = circuitBreaker.executeWithCircuitBreaker(() -> "success 1");
        assertEquals("success 1", result, "Should execute second success");
        assertEquals(State.CLOSED, circuitBreaker.getState(), "Circuit should be CLOSED after success threshold");

        assertFalse(auth.isClosed());

        // Close the authenticator
        auth.close();

        // Verify it's closed
        assertTrue(auth.isClosed());
        // Cannot check password after closing as it now throws IllegalStateException
        // This is actually good security practice - closed authenticators cannot be accessed

        // Verify multiple closes don't cause issues

        } finally {
            CloseableUtil.close(os);
        }
    }

    // ////////////////////////////////////////////////////////////////
    // from InputStream to StringBuilder
    //
    /**
     * Copies from an input stream to a {@link StringBuilder} using the platform default encoding.
     * <p>
     * The input stream is not closed.
     * </p>
     *

# Number of days of inactivity before an Issue or Pull Request becomes stale
daysUntilStale: 30

# Number of days of inactivity before an Issue or Pull Request with the stale label is closed.
# Set to false to disable. If disabled, issues still need to be closed manually, but will remain marked as stale.
daysUntilClose: 15

# Only issues or pull requests with all of these labels are check if stale. Defaults to `[]` (disabled)
onlyLabels: []

            It will be closed in 14 days if no further activity occurs.
            If you don't want the stale bot to close it, then set a milestone for it.
          days-before-pr-close: 14
          close-pr-message: >

    checkNotClosed();
    if (target instanceof Flushable) {
      ((Flushable) target).flush();
    }
  }

  @Override
  public void close() throws IOException {
    this.closed = true;
    if (target instanceof Closeable) {
      ((Closeable) target).close();
    }
  }

  @Override
  public Writer append(char c) throws IOException {
    checkNotClosed();
    target.append(c);
    return this;

    withLock {
      cancel = !source.finished && source.closed && (sink.finished || sink.closed)
      open = isOpen
    }
    if (cancel) {
      // RST this stream to prevent additional data from being sent. This is safe because the input
      // stream is closed (we won't use any further bytes) and the output stream is either finished
      // or closed (so RSTing both streams doesn't cause harm).

 * Features:
 * - Simple state management (CLOSED, OPEN, HALF_OPEN)
 * - Lock-free atomic operations
 * - Configurable thresholds and timeouts
 * - No complex dependencies
 */
public class SimpleCircuitBreaker {

    private static final Logger log = LoggerFactory.getLogger(SimpleCircuitBreaker.class);

    /**
     * Circuit breaker states
     */
    public enum State {
        CLOSED, // Normal operation