// Test with URL, message, exception, and abort set to true
        String url = "http://example.com/test2";
        String message = "Critical error message";
        Exception cause = new IllegalStateException("Critical error");
        boolean abort = true;

        DataStoreCrawlingException exception = new DataStoreCrawlingException(url, message, cause, abort);

/**
 * System exception class for the Fess search engine.
 * This exception is thrown when system-level errors occur in the Fess application,
 * such as configuration errors, initialization failures, or critical runtime issues.
 */
public class FessSystemException extends RuntimeException {

    /** Serial version UID for serialization compatibility */
    private static final long serialVersionUID = 1L;

    /**

  val algorithm: AlgorithmIdentifier,
  val subjectPublicKey: BitString,
)

@IgnoreJRERequirement // As of AGP 3.4.1, D8 desugars API 24 hashCode methods.
internal data class Extension(
  val id: String,
  val critical: Boolean,
  val value: Any?,
)

@IgnoreJRERequirement // As of AGP 3.4.1, D8 desugars API 24 hashCode methods.
internal data class BasicConstraints(

/**
 * Log4j rewrite policy that converts ERROR level log events to WARN level for specified loggers.
 * This policy is useful for downgrading the severity of log events from certain loggers
 * to prevent them from being treated as critical errors.
 */
@Plugin(name = "ErrorToWarnRewritePolicy", category = Core.CATEGORY_NAME, elementType = "rewritePolicy", printObject = true)
public class ErrorToWarnRewritePolicy implements RewritePolicy {

        response.request().url(), (t2 - t1) / 1e6d, response.headers()));

    return response;
  }
}
```

 - CallEnd
        
### Conditional Cache Hit
 
When cache flags require checking the cache results are still valid an early cacheConditionalHit event is
received followed by a cache hit or miss.  Critically in the cache hit scenario the server won’t send the response body.

The response will have non-null `cacheResponse` and `networkResponse`. The cacheResponse will be used as the top level