*  XPath namespace prefixes are resolved from the namespaceNode.
     *  The implementation of this is a little slow, since it creates
     *  a number of objects each time it is called.  This could be optimized
     *  to keep the same objects around, but then thread-safety issues would arise.
     *
     *  @param contextNode The node to start searching from.
     *  @param expression A valid XPath string.

- Verify analyzer configurations

**Performance Issues**
- Increase thread pool size in SuggesterBuilder
- Optimize batch sizes for indexing operations
- Review OpenSearch cluster performance

**Memory Usage**
- Configure appropriate JVM heap settings
- Monitor index sizes and optimize mappings
- Use streaming for large data imports

### Debug Logging

Enable debug logging for detailed troubleshooting:

    service.setIndexName("crawler-data");
    service.setHostname("localhost");
    service.setPort(9200);
});
```

## Performance Tuning

### Thread Configuration

```java
// Optimize thread pool settings
crawler.crawlerContext.setNumOfThread(20);           // Number of crawler threads
crawler.crawlerContext.setMaxThreadCheckCount(50);   // Thread monitoring frequency
```

### Connection Pool Tuning

 * The builder allows setting parameters such as MIME type, filename, extractor name, maximum content length,
 * and cache file size to optimize the extraction process.
 *
 * <p>
 * The main purpose of this class is to simplify the extraction process by providing a fluent interface

				"application/vnd.oma.poc.final-report+xml",
				"application/vnd.oma.poc.groups+xml",
				"application/vnd.oma.poc.invocation-descriptor+xml",
				"application/vnd.oma.poc.optimized-progress-report+xml",
				"application/vnd.oma.xcap-directory+xml",
				"application/vnd.omads-email+xml",
				"application/vnd.omads-file+xml",
				"application/vnd.omads-folder+xml",

  <mime-type type="application/vnd.oma.poc.groups+xml"/>
  <mime-type type="application/vnd.oma.poc.invocation-descriptor+xml"/>
  <mime-type type="application/vnd.oma.poc.optimized-progress-report+xml"/>
  <mime-type type="application/vnd.oma.xcap-directory+xml"/>
  <mime-type type="application/vnd.omads-email+xml"/>
  <mime-type type="application/vnd.omads-file+xml"/>