}

    /**
     * Creates a shallow copy of this requirement.
     */
    @Override
    public Requirement clone() {
        try {
            return (Requirement) super.clone();
        } catch (CloneNotSupportedException e) {
            throw new UnsupportedOperationException(e);
        }
    }

    try {
      super.testKeySetRemoveAllNullFromEmpty();
    } catch (RuntimeException tolerated) {
      // GWT's HashMap.keySet().removeAll(null) doesn't throws NPE.
    }
  }

  @Override
  public void testEntrySetRemoveAllNullFromEmpty() {
    try {
      super.testEntrySetRemoveAllNullFromEmpty();
    } catch (RuntimeException tolerated) {

                            return new Handler();
                        }
                        return null;
                    }
                });
                handlerRegistered = true;
            } catch (Error e) {
                // Factory already set, that's fine
                handlerRegistered = true;
            }
        }
    }

    @BeforeEach

            try {
                final Instant instant = Instant.from(DateTimeFormatter.ISO_INSTANT.parse(value.toString()));
                return LocalDateTime.ofInstant(instant, ZoneId.systemDefault());
            } catch (final DateTimeParseException e) {
                logger.debug("Invalid date format: {}", value, e);
            }
        }
        return DfTypeUtil.toLocalDateTime(value);
    }

        Objects.requireNonNull(toolchains, "toolchains cannot be null");

        try (Writer out = output) {
            new MavenToolchainsStaxWriter().write(out, toolchains.getDelegate());
        } catch (XMLStreamException e) {
            throw new IOException("Error writing toolchains", e);
        }
    }

            if (value <= 0 || value > ComponentUtil.getFessConfig().getPageSearchlogMaxFetchSizeAsInteger()) {
                return SearchLogPager.DEFAULT_PAGE_SIZE;
            }
            return value;
        } catch (final NumberFormatException e) {
            // ignore
            return SearchLogPager.DEFAULT_PAGE_SIZE;
        }
    }

    synchronized (lock) {
      stackCopy = new ArrayList<>(stack);
      stack.clear();
    }
    for (TearDown tearDown : stackCopy) {
      try {
        tearDown.tearDown();
      } catch (Throwable t) {
        if (suppressThrows) {
          logger.log(Level.INFO, "exception thrown during tearDown", t);
        } else {
          if (exception == null) {
            exception = t;
          } else {

    synchronized (lock) {
      stackCopy = new ArrayList<>(stack);
      stack.clear();
    }
    for (TearDown tearDown : stackCopy) {
      try {
        tearDown.tearDown();
      } catch (Throwable t) {
        if (suppressThrows) {
          logger.log(Level.INFO, "exception thrown during tearDown", t);
        } else {
          if (exception == null) {
            exception = t;
          } else {

          protected ExecutorService delegate() {
            return delegate;
          }
        };
    Method closeMethod;
    try {
      closeMethod = wrapper.getClass().getMethod("close");
    } catch (NoSuchMethodException e) {
      assertThat(isAndroid() || isBeforeJava19()).isTrue();
      return; // close() doesn't exist, so we can't test it.
    }
    closeMethod.invoke(wrapper);

        try {
            schemaFactory.setProperty(XMLConstants.ACCESS_EXTERNAL_SCHEMA, "");
            schemaFactory.setProperty(XMLConstants.ACCESS_EXTERNAL_DTD, "");
        } catch (final Exception e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Failed to set a property.", e);
            }
        }
    }