assertThat(UnsignedLongs.join(",")).isEmpty();
    assertThat(UnsignedLongs.join(",", 1)).isEqualTo("1");
    assertThat(UnsignedLongs.join(",", 1, 2)).isEqualTo("1,2");
    assertThat(UnsignedLongs.join(",", -1, Long.MIN_VALUE))
        .isEqualTo("18446744073709551615,9223372036854775808");
    assertThat(UnsignedLongs.join("", 1, 2, 3)).isEqualTo("123");
    assertThat(UnsignedLongs.join("", -1, Long.MIN_VALUE))

                copyOp.exclude(Constants.QUERIES);
            });
            form.queries =
                    stream(entity.getQueries()).get(stream -> stream.filter(StringUtil::isNotBlank).collect(Collectors.joining("\n")));
        }).orElse(() -> {
            throwValidationError(messages -> messages.addErrorsCrudCouldNotFindCrudTable(GLOBAL, id), this::asListHtml);
        });
        saveToken();

    assertThat(Doubles.join(",", EMPTY)).isEmpty();
    assertThat(Doubles.join(",", ARRAY1)).isEqualTo("1.0");
    assertThat(Doubles.join(",", 1.0, 2.0)).isEqualTo("1.0,2.0");
    assertThat(Doubles.join("", 1.0, 2.0, 3.0)).isEqualTo("1.02.03.0");
  }

  public void testJoinNonTrivialDoubles() {
    assertThat(Doubles.join(",", EMPTY)).isEmpty();
    assertThat(Doubles.join(",", 1.2)).isEqualTo("1.2");

        String jwtClaim =
                "{\"email\":\"******@****.***\",\"sub\":\"1234567890\",\"name\":\"John Doe\",\"groups\":[\"group1\",\"group2\"]}";

        // Execute
        authenticator.parseJwtClaim(jwtClaim, attributes);

        // Verify
        assertEquals("1234567890", attributes.get("sub"));
        assertEquals("John Doe", attributes.get("name"));

        // Check groups array

    }

    protected String createMessage(final ApiFailureResource resource, final Throwable cause) {
        if (!resource.getMessageList().isEmpty()) {
            return resource.getMessageList().stream().collect(Collectors.joining(" "));
        }

        if (cause == null) {
            return "Unknown error";
        }

        final Supplier<String> stacktraceString = () -> {

                    .filter(StringUtil::isNotBlank)
                    .distinct()
                    .collect(Collectors.joining("\n")));
        }).orElse(() -> {
            throwValidationError(messages -> messages.addErrorsCrudCouldNotFindCrudTable(GLOBAL, id), this::asListHtml);
        });
        saveToken();

            copyOp.excludeNull();
            copyOp.exclude(Constants.QUERIES);
        });
        body.queries = stream(entity.getQueries()).get(stream -> stream.filter(StringUtil::isNotBlank).collect(Collectors.joining("\n")));
        return body;
    }

     *
     * @return compact string representation of the mapping rule
     */
    public String toLineString() {
        if (isUpdated()) {
            return StringUtils.join(newInputs, ",") + "=>" + newOutput;
        }
        return StringUtils.join(inputs, ",") + "=>" + output;
    }

    val endsFirst = buildRequestThread(secondRequest, secondResponseCode)
    endsFirst.start()
    endsFirst.join()
    // First response is still waiting.
    assertThat(firstResponseCode.get()).isEqualTo(0)
    // Second response is done.
    assertThat(secondResponseCode.get()).isEqualTo(200)
    latch.countDown()
    startsFirst.join()
    // And now it's done!
    assertThat(firstResponseCode.get()).isEqualTo(200)
    // (Still done).

                            .filter(StringUtil::isNotBlank)
                            .distinct()
                            .collect(Collectors.joining(",")));
                    final String labels = elevateWordToLabelBhv.selectList(cb -> cb.query().setElevateWordId_Equal(entity.getId()))
                            .stream()