<version>1.0.0+</version>
          <description>
            What to do when verification of an artifact checksum fails. Valid values are "fail" (default for Maven 4 and
            above), "warn" (default for Maven 3) or "ignore".
          </description>
          <type>String</type>
        </field>
      </fields>
    </class>

    <class java.clone="deep">
      <name>ActivationProperty</name>

        if (filesToDelete.isEmpty()) {
            LOGGER.warn("No files need to be deleted.");
            return;
        }

        LOGGER.warn("The following changelog files {} be deleted:", dryRun ? "can" : "will");
        LOGGER.warn("");
        filesToDelete.forEach(file -> LOGGER.warn("\t{}", rootDir.relativize(file.toPath())));

        if (dryRun == false) {

                    }, e -> {
                        logger.warn("Failed to open index: {}", docIndex, e);
                        coordinator.completeOperation("reload_doc_index");
                    }));
                }, e -> {
                    logger.warn("Failed to close index: {}", docIndex, e);
                    coordinator.completeOperation("reload_doc_index");

            }
        }
        if (!conflicts.isEmpty()) {
            context.logger.warn("Found " + conflicts.size() + " extension conflict(s):");
            for (String conflict : conflicts) {
                context.logger.warn("* " + conflict);
            }
            context.logger.warn("");
            context.logger.warn(

        } catch (final Exception e) {
            logger.warn("Failed to delete UrlFilter: sessionId={}", sid, e);
        }

        try {
            // clear queue
            urlQueueService.clearCache();
            urlQueueService.delete(sid);
        } catch (final Exception e) {
            logger.warn("Failed to delete UrlQueue: sessionId={}", sid, e);
        }

        try {

            thumbnailQueueThread.join(10000);
        } catch (final InterruptedException e) {
            logger.warn("Thumbnail thread timed out.", e);
        }
        generatorList.forEach(g -> {
            try {
                g.destroy();
            } catch (final Exception e) {
                logger.warn("Failed to stop thumbnail generator.", e);
            }
        });
    }

    /**

                    final String password = paramMap.get(CRAWLER_FILE_AUTH + "." + fileAuthName + ".password");

                    if (StringUtil.isEmpty(username)) {
                        logger.warn("username is empty. fileAuth:{}", fileAuthName);
                        continue;
                    }

                    final SmbAuthentication smbAuth = new SmbAuthentication();

                    }
                } else {
                    logger.warn("Failed to send {} to {}. HTTP Status is {}. {}", body, url, response.getHttpStatusCode(),
                            response.getContentAsString());
                }
            } catch (final IOException e) {
                logger.warn("Failed to send {} to {}.", body, url, e);
            }
        }));
    }

    /**

                    } catch (final Exception e) {
                        logger.warn("Failed to install {}", filename, e);
                    } finally {
                        if (tempFile.exists() && !tempFile.delete()) {
                            logger.warn("Failed to delete {}.", tempFile.getAbsolutePath());
                        }
                    }
                }).start();

        if (userId != null && !userId.equals(sessionUserId)) {
            logger.warn("Cannot clear session, userId mismatch. sessionId={}, requestUserId={}", sessionId, userId);
            return false;
        }
        if (userId == null && sessionUserId != null) {
            logger.warn("Cannot clear session, userId mismatch (null vs non-null). sessionId={}, sessionUserId={}", sessionId,