return stringWriter.toString();
  }

  /**
   * Returns the stack trace of {@code throwable}, possibly providing slower iteration over the full
   * trace but faster iteration over parts of the trace. Here, "slower" and "faster" are defined in
   * comparison to the normal way to access the stack trace, {@link Throwable#getStackTrace()

        assertTrue("Should contain Thread: entries", hasThreadEntry);

        // Verify format - should contain stack trace entries
        boolean hasStackTrace = capturedOutput.stream().anyMatch(line -> line.startsWith("\tat "));
        assertTrue("Should contain stack trace entries", hasStackTrace);
    }

    public void test_processThreadDump_withNullConsumer() {
        try {

    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());
    }
  }

        final String message = "Test stack trace";
        final VaMessenger<FessMessages> messageCode = messages -> messages.addErrorsSsoLoginError(UserMessages.GLOBAL_PROPERTY_KEY);
        final Exception cause = new RuntimeException("Root cause");

        // Execute
        final SsoMessageException exception = new SsoMessageException(messageCode, message, cause);

        // Verify stack trace is available

        assertTrue(exception instanceof Throwable);
    }

    public void test_stackTracePresence() {
        // Setup
        final String message = "Query error with stack trace";
        final VaMessenger<FessMessages> messageCode = messages -> messages.addErrorsInvalidQueryUnknown(UserMessages.GLOBAL_PROPERTY_KEY);
        final Exception cause = new IllegalArgumentException("Invalid query argument");

                                            <la:option value="INFO">INFO</la:option>
                                            <la:option value="DEBUG">DEBUG</la:option>
                                            <la:option value="TRACE">TRACE</la:option>
                                            <la:option value="ALL">ALL</la:option>
                                        </la:select>
                                    </div>

          return Lists.<LockGraphNode>newArrayListWithCapacity(3);
        }
      };

  /**
   * A Throwable used to record a stack trace that illustrates an example of a specific lock
   * acquisition ordering. The top of the stack trace is truncated such that it starts with the
   * acquisition of the lock in question, e.g.
   *
   * <pre>
   * com...ExampleStackTrace: LockB -&gt; LockC

        Exception exception = new Exception() {
            @Override
            public void printStackTrace(java.io.PrintWriter writer) {
                // Simulate a normal stack trace output
                writer.println("Special test exception");
                writer.flush();
            }
        };

        monitorTarget.appendException(buf, exception);

      }
      /*
       * If some other exception happened, we just propagate the wrapper
       * UncheckedExecutionException, which has the stack trace from this thread and which has its
       * cause set to the underlying exception (which may be from another thread). If we someday
       * learn that some other exception besides IllegalArgumentException is common, then we could

#   MVNW_REPOURL - repo url base for downloading maven distribution
#   MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
#   MVNW_VERBOSE - true: enable verbose log; debug: trace the mvnw script; others: silence the output
# ----------------------------------------------------------------------------

set -euf
[ "${MVNW_VERBOSE-}" != debug ] || set -x

# OS specific support.