* <li>IDs must match, or an IllegalArgumentException is thrown</li>
     * <li>Text is taken from item1</li>
     * <li>Readings are merged, maintaining uniqueness</li>
     * <li>Fields, tags, languages, and roles are merged, maintaining uniqueness</li>
     * <li>Kinds are merged, maintaining uniqueness</li>
     * <li>Frequencies (queryFreq, docFreq) are summed</li>
     * <li>Timestamp and userBoost are taken from item2 (newer values)</li>
     * </ul>

     * Uses SMB3-compliant nonce generation with guaranteed uniqueness.
     *
     * @return nonce appropriate for the dialect (16 bytes for GCM, 12 bytes for CCM)
     */
    public byte[] generateNonce() {
        final byte[] nonce = new byte[isGCMCipher() ? 16 : 12];

        if (isGCMCipher()) {
            // SMB 3.1.1 GCM: 96-bit random/fixed + 32-bit counter for guaranteed uniqueness
            // Fill first 12 bytes with random data

import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.util.Map;
import java.util.Set;
import org.jspecify.annotations.Nullable;

/**
 * A bimap (or "bidirectional map") is a map that preserves the uniqueness of its values as well as
 * that of its keys. This constraint enables bimaps to support an "inverse view", which is another
 * bimap containing the same entries as this bimap but with reversed keys and values.
 *

versioning is done at the bucket level.

Only MinIO generates version IDs, and they can't be edited. Version IDs are simply of `DCE 1.1 v4 UUID 4` (random data based), UUIDs are 128 bit numbers which are intended to have a high likelihood of uniqueness over space and time and are computationally difficult to guess. They are globally unique identifiers which can be locally generated without contacting a global registration authority. UUIDs are intended as unique identifiers for both mass tagging...

// hashOrder - hashes input key to return consistent
// hashed integer slice. Returned integer order is salted
// with an input key. This results in consistent order.
// NOTE: collisions are fine, we are not looking for uniqueness
// in the slices returned.
func hashOrder(key string, cardinality int) []int {
	if cardinality <= 0 {
		// Returns an empty int slice for cardinality < 0.
		return nil
	}

        }
        return hash;
    }

    /**
     * Encodes a similar document hash using GZIP compression and Base64 encoding.
     * This reduces storage space for hash values while maintaining uniqueness.
     *
     * @param hash the hash string to encode
     * @return the encoded hash string with prefix, or the original hash if encoding fails
     */
    public String encodeSimilarDocHash(final String hash) {

            assertNotNull(nonce, "Nonce should not be null");
            assertTrue(nonce.length > 0, "Nonce should have length > 0");

            // Convert to string for uniqueness check
            String nonceStr = Arrays.toString(nonce);
            assertFalse(nonces.contains(nonceStr), "Nonce should be unique");
            nonces.add(nonceStr);
        }

   *       other words, {@code ContiguousSet.create(a.canonical(domain), domain).equals(
   *       ContiguousSet.create(a, domain))}
   *   <li>uniqueness: unless {@code a.isEmpty()}, {@code ContiguousSet.create(a,
   *       domain).equals(ContiguousSet.create(b, domain))} implies {@code
   *       a.canonical(domain).equals(b.canonical(domain))}

   *       other words, {@code ContiguousSet.create(a.canonical(domain), domain).equals(
   *       ContiguousSet.create(a, domain))}
   *   <li>uniqueness: unless {@code a.isEmpty()}, {@code ContiguousSet.create(a,
   *       domain).equals(ContiguousSet.create(b, domain))} implies {@code
   *       a.canonical(domain).equals(b.canonical(domain))}

        }
        return "Unknown";
    }

    /**
     * Gets the instance ID for this Fess instance.
     * Combines scheduler.target.name (if configured), hostname, and PID
     * to ensure uniqueness across multiple JVMs on the same host.
     *
     * @return The instance ID.
     */
    public String getInstanceId() {
        final String targetName = ComponentUtil.getFessConfig().getSchedulerTargetName();