private var closed = false

      override fun close() {
        if (closed) return
        try {
          super.close()
        } finally {
          closedLatch.countDown()
        }
      }
    }.buffer()

  override val sink: BufferedSink =
    object : ForwardingSink(delegate.sink) {
      private var closed = false

      override fun close() {

    doClose(closeable, swallowException, !swallowException);
  }

  // Close the closeable using the Closeables, passing in the swallowException
  // parameter. expectThrown determines whether we expect an exception to
  // be thrown by Closeables.close;
  private void doClose(Closeable closeable, boolean swallowException, boolean expectThrown)
      throws IOException {
    try {

    val relay = edit(file, upstream, metadata, 1024)
    val source1 = relay.newSource()
    val source2 = relay.newSource()
    source1!!.close()
    source1.close() // Unnecessary. Shouldn't decrement the reference count.
    assertThat(relay.isClosed).isFalse()
    source2!!.close()
    assertThat(relay.isClosed).isTrue()
    assertFile(Relay.PREFIX_DIRTY, -1L, -1, null, null)
  }

  @Test
  fun racingReaders() {

          val source = Buffer().writeUtf8("hello")
          return object : ForwardingSource(source) {
            override fun close() {
              closed = true
              super.close()
            }
          }.buffer()
        }
      }
    body.source().close()
    assertThat(closed).isTrue()
  }

  @Test
  fun throwingUnderlyingSourceClosesQuietly() {
    val body: ResponseBody =

    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;

     * @see Closeable#close()
     */
    public static void close(final Closeable closeable) {
        if (closeable == null) {
            return;
        }
        try {
            closeable.close();
        } catch (final IOException e) {
            logger.log(format("ECL0017", e.getMessage()), e);
        }
    }

    /**
     * Closes a {@link Closeable} quietly, suppressing any {@link IOException}.
     *

        else -> throw EOFException() // We ran out of data before we found the required boundary.
      }
    }

    @Throws(IOException::class)
    override fun close() {
      if (closed) return
      closed = true
      currentPart = null
      source.close()
    }

    /** A single part in a multipart body. */
    class Part(
      @get:JvmName("headers") val headers: Headers,

   *
   * To avoid leaking resources callers should close the [Response] which in turn will close the
   * underlying [ResponseBody].
   *
   * ```java
   * // ensure the response (and underlying response body) is closed
   * try (Response response = client.newCall(request).execute()) {
   *   ...
   * }
   * ```
   *

          assertThat(dispatcherE.closed).isTrue()
          assertThat(dispatcherF.closed).isFalse() // Never started.
        }
      }
  }

  class ClosableDispatcher : Dispatcher() {
    var closed = false

    override fun dispatch(request: RecordedRequest) = MockResponse()

    override fun close() {
      closed = true
    }
  }

        messageBuffer.readAndWriteUnsafe(maskCursor!!)
        maskCursor.seek(0L)
        toggleMask(maskCursor, maskKey)
        maskCursor.close()
      }
    }

    sinkBuffer.write(messageBuffer, dataSize)
    sink.flush()
  }

  override fun close() {
    messageDeflater?.closeQuietly()
    sink.closeQuietly()
  }