}
        return String.format("[%s] %s: %s", errorCode.name(), errorCode.getDescription(), message);
    }

    private String extractOperationName() {
        StackTraceElement[] stack = Thread.currentThread().getStackTrace();
        for (StackTraceElement element : stack) {
            String className = element.getClassName();
            if (className.startsWith("jcifs.smb") && !className.contains("Exception")) {

    private List<File> filesToDelete = new ArrayList<>();

    private final String baseFilename;

    private final String fileSuffix;

    private StackTraceElement callerInfo;

    private Thread cleanupWarning;

    private boolean warnAboutCleanup = false;

    public TestFileManager(String baseFilename, String fileSuffix) {
        this.baseFilename = baseFilename;

        assertTrue(exception.getStackTrace().length > 0);

        // Should contain this test method in stack trace
        boolean foundTestMethod = false;
        for (StackTraceElement element : exception.getStackTrace()) {
            if (element.getMethodName().contains("testStackTracePreservation")) {
                foundTestMethod = true;
                break;
            }
        }

   *   at com...MyClass.someMethodThatAcquiresLockB(MyClass.java:123)
   * </pre>
   */
  private static class ExampleStackTrace extends IllegalStateException {

    static final StackTraceElement[] EMPTY_STACK_TRACE = new StackTraceElement[0];

    static final ImmutableSet<String> EXCLUDED_CLASS_NAMES =
        ImmutableSet.of(
            CycleDetectingLockFactory.class.getName(),
            ExampleStackTrace.class.getName(),

    private final int flags;
    private final int access;
    private final int attrs;
    private final int options;
    private final String unc;

    private final StackTraceElement[] creationBacktrace;

    private final long initialSize;

    /**
     * @param cfg
     * @param fid
     * @param tree
     * @param unc
     * @param options
     * @param attrs

   *   at com...MyClass.someMethodThatAcquiresLockB(MyClass.java:123)
   * </pre>
   */
  private static class ExampleStackTrace extends IllegalStateException {

    static final StackTraceElement[] EMPTY_STACK_TRACE = new StackTraceElement[0];

    static final ImmutableSet<String> EXCLUDED_CLASS_NAMES =
        ImmutableSet.of(
            CycleDetectingLockFactory.class.getName(),
            ExampleStackTrace.class.getName(),

        });
    thread.start();

    boolean done = doneSignal.await(1, SECONDS);
    if (!done) {
      StringBuilder builder = new StringBuilder();
      for (StackTraceElement trace : thread.getStackTrace()) {
        builder.append("\tat ").append(trace).append('\n');
      }
      fail(builder.toString());
    }
  }

  }

  private static int findStackFrame(ExecutionException e, String clazz, String method) {
    StackTraceElement[] elements = e.getStackTrace();
    for (int i = 0; i < elements.length; i++) {
      StackTraceElement element = elements[i];
      if (element.getClassName().equals(clazz) && element.getMethodName().equals(method)) {
        return i;
      }
    }

  }

  private static int findStackFrame(ExecutionException e, String clazz, String method) {
    StackTraceElement[] elements = e.getStackTrace();
    for (int i = 0; i < elements.length; i++) {
      StackTraceElement element = elements[i];
      if (element.getClassName().equals(clazz) && element.getMethodName().equals(method)) {
        return i;
      }
    }

              }
            });
    thread.start();

    boolean done = doneSignal.await(1, SECONDS);
    if (!done) {
      StringBuilder builder = new StringBuilder();
      for (StackTraceElement trace : thread.getStackTrace()) {
        builder.append("\tat ").append(trace).append('\n');
      }
      fail(builder.toString());
    }
  }

  /**