* Out-of-range indexes return false.
   */
  @VisibleForTesting
  static boolean validSurrogatePairAt(CharSequence string, int index) {
    return index >= 0
        && index <= (string.length() - 2)
        && Character.isHighSurrogate(string.charAt(index))
        && Character.isLowSurrogate(string.charAt(index + 1));
  }

  /**

import org.codelibs.fess.opensearch.client.SearchEngineClient;
import org.codelibs.fess.util.ComponentUtil;
import org.opensearch.index.query.QueryBuilder;
import org.opensearch.index.query.QueryBuilders;

/**
 * Job for exporting indexed search documents to the filesystem.
 * Each document is exported as a single file with URL structure mapped to directory structure.
 */
public class IndexExportJob {

import org.opensearch.index.query.QueryBuilder;

import jakarta.annotation.PostConstruct;

/**
 * Query processor component that handles query filters and commands.
 * This class provides a pipeline for processing Lucene queries by applying
 * a chain of filters and executing registered query commands.
 *
 * <p>The processor maintains a map of query commands indexed by query class names

		}
	}
	if ok {
		return z.rebalMeta.save(ctx, z.serverPools[0])
	}

	return nil
}

func (z *erasureServerPools) findIndex(index int) int {
	if z.rebalMeta == nil {
		return 0
	}
	for i := range len(z.rebalMeta.PoolStats) {
		if i == index {
			return index
		}
	}
	return -1
}

// initRebalanceMeta initializes rebalance metadata for a new rebalance

(print $.Template.BasePath "/_helper_create_bucket.txt") . | indent 4 }} add-user: |- {{ include (print $.Template.BasePath "/_helper_create_user.txt") . | indent 4 }} add-policy: |- {{ include (print $.Template.BasePath "/_helper_create_policy.txt") . | indent 4 }} {{- range $idx, $policy := .Values.policies }} # Policy: {{ $policy.name }} policy_{{ $idx }}.json: |- {{ include (print $.Template.BasePath "/_helper_policy.tpl") . | indent 4 }} {{ end }} {{- range $idx, $svc := .Values.svcaccts }} {{-...

	// map of heal path to heal sequence
	healSeqMap map[string]*healSequence // Indexed by endpoint
	// keep track of the healing status of disks in the memory
	//   false: the disk needs to be healed but no healing routine is started
	//    true: the disk is currently healing
	healLocalDisks map[Endpoint]bool
	healStatus     map[string]healingTracker // Indexed by disk ID
}

// newHealState - initialize global heal state management

(print $.Template.BasePath "/_helper_create_bucket.txt") . | indent 4 }} add-user: |- {{ include (print $.Template.BasePath "/_helper_create_user.txt") . | indent 4 }} add-policy: |- {{ include (print $.Template.BasePath "/_helper_create_policy.txt") . | indent 4 }} {{- range $idx, $policy := .Values.policies }} # Policy: {{ $policy.name }} policy_{{ $idx }}.json: |- {{ include (print $.Template.BasePath "/_helper_policy.tpl") . | indent 4 }} {{ end }} {{- range $idx, $svc := .Values.svcaccts }} {{-...

		},
		{
			name:       "indexed-list-match-equals-s-star",
			query:      `SELECT s.* from s3object s WHERE (7,8.5,9) = s.nested[1]`,
			wantResult: `{"id":3,"title":"Second Record","desc":"another text","nested":[[2,3,4],[7,8.5,9]]}`,
		},
		{
			name:       "indexed-list-match-equals-s-index",
			query:      `SELECT s.nested[1], s.nested[0] from s3object s WHERE (7,8.5,9) = s.nested[1]`,

        }
        return deleteByQuery(index, QueryBuilders.matchAllQuery());
    }

    /**
     * Deletes document words (words with DOC_FREQ >= 1 that don't have QUERY or USER kinds).
     *
     * @param index The index name
     * @return The SuggestDeleteResponse
     */
    public SuggestDeleteResponse deleteDocumentWords(final String index) {

			if err == errDoneForNow {
				err = nil
			}
			return err
		}
	}
	return nil
}

// isIndexedMetaV2 returns non-nil result if metadata is indexed.
// Returns 3x nil if not XLV2 or not indexed.
// If indexed and unable to parse an error will be returned.
func isIndexedMetaV2(buf []byte) (meta xlMetaBuf, data xlMetaInlineData, err error) {
	buf, major, minor, err := checkXL2V1(buf)