line.append(isWindows ? convertWindowsPath(getProject(), cacheDir) : convertLinuxPath(getProject(), cacheDir));
        line.append(" -S");
        line.append(" --parallel");
        line.append(" -D'org.gradle.logging.level'=" + getProject().getGradle().getStartParameter().getLogLevel());
        if (testClass != null) {
            line.append(" --tests=");
            line.append(testClass);
        }

    /**
     * Gets the problems that were encountered during the settings building. Note that only problems of severity
     * {@link SettingsProblem.Severity#WARNING} and below are reported here. Problems with a higher severity level cause
     * the settings builder to fail with a {@link SettingsBuildingException}.
     *
     * @return The problems that were encountered during the settings building, can be empty but never {@code null}.
     */

        }
    }

    /**
     * Causes the currently executing thread to sleep (temporarily cease execution) for the specified number of milliseconds.
     * Any {@link InterruptedException} is caught and logged at debug level.
     *
     * @param millis
     *            the length of time to sleep in milliseconds
     */
    public static void sleepQuietly(final long millis) {
        if (millis < 1L) {
            return;
        }

        dataDisplacement = readInt4(buffer, bufferIndex);
        bufferIndex += 4;
        setupCount = buffer[bufferIndex] & 0xFF;
        bufferIndex += 2;
        if ((setupCount != 0) && (LogStream.level >= 3)) {
            log.println("setupCount is not zero: " + setupCount);
        }

        return bufferIndex - start;
    }

   * @throws IllegalStateException if a concurrency level was already set
   */
  @CanIgnoreReturnValue
  public MapMaker concurrencyLevel(int concurrencyLevel) {
    checkState(
        this.concurrencyLevel == UNSET_INT,
        "concurrency level was already set to %s",
        this.concurrencyLevel);
    checkArgument(concurrencyLevel > 0);

});
```

### Debug Logging

Enable debug logging by adding to your logging configuration:

```xml
<logger name="org.codelibs.fess.crawler" level="DEBUG"/>
<logger name="org.codelibs.fess.crawler.client" level="DEBUG"/>
<logger name="org.codelibs.fess.crawler.extractor" level="DEBUG"/>
```

### Monitoring

```java
// Monitor crawling progress
while (crawler.crawlerContext.getStatus() == CrawlerStatus.RUNNING) {

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Executor;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.logging.Formatter;
import java.util.logging.Level;
import java.util.logging.LogRecord;
import java.util.logging.Logger;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Tests for {@link ServiceManager}.
 *

/**
 * {@code Escaper} instances suitable for strings to be included in XML attribute values and
 * elements' text contents. When possible, avoid manual escaping by using templating systems and
 * high-level APIs that provide autoescaping. For example, consider <a
 * href="http://www.xom.nu/">XOM</a>.
 *
 * <p><b>Note:</b> Currently the escapers provided by this class do not escape any characters

                for (final LogNotificationEvent event : batch) {
                    final Map<String, Object> source = new HashMap<>();
                    source.put("hostname", hostname);
                    source.put("level", event.getLevel());
                    source.put("loggerName", event.getLoggerName());
                    source.put("message", event.getMessage());

import static java.lang.annotation.RetentionPolicy.CLASS;

import com.google.common.annotations.GwtCompatible;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;

/**
 * Annotates a "top-level" type-variable usage that takes its nullness from the type argument
 * supplied by the user of the class. For example, {@code Multiset.Entry.getElement()} returns
 * {@code @ParametricNullness E}, which means:
 *
 * <ul>