synchronized (currentStream) {
                currentStream.print(x);
                currentStream.notifyAll();
            }
        }

        @Override
        public void print(boolean b) {
            final PrintStream currentStream = getOutputStreamForCurrentThread();
            synchronized (currentStream) {
                currentStream.print(b);
                currentStream.notifyAll();
            }

        activityHelper.print("aaa", OptionalThing.empty(), Map.of());
        assertEquals("action:AAA\tuser:-", localLogMsg.get());

        activityHelper.print("aaa bbb", createUser("testuser", new String[0]), Map.of("111", "222"));
        assertEquals("action:AAA BBB\tuser:testuser\t111:222", localLogMsg.get());

                saveInfo(messages -> messages.addSuccessPrintThreadDump(GLOBAL));
            } catch (final Exception e) {
                logger.warn("Failed to print a thread dump.", e);
                throwValidationError(messages -> messages.addErrorsFailedToPrintThreadDump(GLOBAL), this::asListHtml);
            }
        }).orElse(() -> {

        @Override
        public String getAsString(final Object value) {
            if (value instanceof Date) {
                return DEFAULT_DATE_PRINTER.print(((Date) value).getTime());
            }
            return null;
        }

        @Override
        public Object getAsObject(final String value) {
            if (StringUtil.isEmpty(value)) {