private static final Pattern EMAIL_ADDRESS_PATTERN =
            Pattern.compile("[A-Z0-9._%+-]+@[A-Z0-9.-]+\\.[A-Z]{2,6}", Pattern.CASE_INSENSITIVE);

    /**
     * Cache for storing resource file modification timestamps to enable cache busting.
     * The cache expires after 10 minutes and has a maximum size of 1000 entries.
     */
    private static LoadingCache<String, Long> resourceHashCache =

	return h&flag != 0
}

// s3APIMiddleware - performs some common handler functionality for S3 API
// handlers.
//
// It is set per-"handler function registration" in the router to allow for
// behavior modification via flags.
//
// This middleware always calls `collectAPIStats` to collect API stats.
//
// The passed in handler function must be a method of `objectAPIHandlers` for

 * This class extends the base CrawlerThread and provides Fess-specific functionality for
 * crawling and indexing documents, including incremental crawling capabilities, content
 * modification checking, and integration with the Fess search engine backend.
 *
 * <p>Key features include:</p>
 * <ul>
 * <li>Incremental crawling support with last-modified timestamp checking</li>

            fail("Should throw RuntimeException");
        } catch (RuntimeException e) {
            assertEquals("Test exception", e.getMessage());
        }
    }

    // Test concurrent modification of jvmOptions
    public void test_jvmOptions_concurrent() throws InterruptedException {
        CountDownLatch latch = new CountDownLatch(2);

        Thread t1 = new Thread(() -> {

    }
    
    private void fallbackToTcp(RdmaConnection connection) {
        log.info("Falling back to TCP transport");
        // Switch transport to TCP
        // This would require transport factory modification
    }
}
```

## 10. Security Considerations

### 10.1 RDMA Security
```java
public class RdmaSecurityManager {

    }

    /**
     * Adds a query rescorer for post-processing search results.
     * Query rescorers allow modification of search scores after the initial query execution.
     *
     * @param rescorer the query rescorer to add
     */
    public void addQueryRescorer(final QueryRescorer rescorer) {

   * lists are sublist views of the original list, produced on demand using {@link List#subList(int,
   * int)}, and are subject to all the usual caveats about modification as explained in that API.
   *
   * @param list the list to return consecutive sublists of
   * @param size the desired size of each sublist (the last may be smaller)
   * @return a list of consecutive sublists

        i = t1.compareToIgnoreCase(t2);
        if (i == 0) {
            return f1name.compareToIgnoreCase(f2name);
        }
        return i;
    }

    /**
     * Compares two SMB files by modification date.
     * @param f1 first file to compare
     * @param f1name name of first file
     * @param f2 second file to compare
     * @return comparison result for sorting

        i = t1.compareToIgnoreCase(t2);
        if (i == 0) {
            return f1name.compareToIgnoreCase(f2name);
        }
        return i;
    }

    /**
     * Compares two SMB files by modification date.
     * @param f1 first file to compare
     * @param f1name name of first file
     * @param f2 second file to compare
     * @return comparison result for sorting

  @Throws(IOException::class)
  fun snapshots(): MutableIterator<Snapshot> {
    initialize()
    return object : MutableIterator<Snapshot> {
      /** Iterate a copy of the entries to defend against concurrent modification errors. */
      private val delegate = ArrayList(lruEntries.values).iterator()

      /** The snapshot to return from [next]. Null if we haven't computed that yet. */
      private var nextSnapshot: Snapshot? = null