import org.opensearch.index.query.MoreLikeThisQueryBuilder;
import org.opensearch.index.query.PrefixQueryBuilder;
import org.opensearch.index.query.QueryBuilder;
import org.opensearch.index.query.QueryBuilders;
import org.opensearch.index.query.QueryStringQueryBuilder;
import org.opensearch.index.query.RangeQueryBuilder;
import org.opensearch.index.query.RegexpQueryBuilder;
import org.opensearch.index.query.SpanTermQueryBuilder;

import org.opensearch.index.query.MoreLikeThisQueryBuilder;
import org.opensearch.index.query.PrefixQueryBuilder;
import org.opensearch.index.query.QueryBuilder;
import org.opensearch.index.query.QueryBuilders;
import org.opensearch.index.query.QueryStringQueryBuilder;
import org.opensearch.index.query.RangeQueryBuilder;
import org.opensearch.index.query.RegexpQueryBuilder;
import org.opensearch.index.query.SpanTermQueryBuilder;

index.document.crawler.filter.number_of_replicas=1
# Index name for configuration data.
index.config.index=fess_config
# Index name for user data.
index.user.index=fess_user
# Index name for log data.
index.log.index=fess_log
# Prefix for dictionary index names.
index.dictionary.prefix=

# doc management

# Array-type fields for admin in the index.
index.admin.array.fields=lang,role,label,anchor,virtual_host

    });
```

## Advanced Usage

### Index from Existing Documents

```java
import org.codelibs.fess.suggest.index.contents.document.ESSourceReader;

// Index suggestions from existing Elasticsearch documents
DocumentReader reader = new ESSourceReader(
    client,
    suggester.settings(),
    "content-index",        // source index
    "document"             // document type
);

    }

    private int reverseIndex(int index) {
      int size = size();
      checkElementIndex(index, size);
      return (size - 1) - index;
    }

    private int reversePosition(int index) {
      int size = size();
      checkPositionIndex(index, size);
      return size - index;
    }

    @Override
    public void add(int index, @ParametricNullness T element) {

    }

    /**
     * Default keys for suggest settings.
     */
    public static class DefaultKeys {
        /** Index key. */
        public static final String INDEX = "index";
        /** Supported fields key. */
        public static final String SUPPORTED_FIELDS = "supportedFields";
        /** Tag field name key. */

    level = DeprecationLevel.ERROR,
  )
  fun size(): Int = size

  fun encodedName(index: Int): String = encodedNames[index]

  fun name(index: Int): String = encodedName(index).percentDecode(plusIsSpace = true)

  fun encodedValue(index: Int): String = encodedValues[index]

  fun value(index: Int): String = encodedValue(index).percentDecode(plusIsSpace = true)

  override fun contentType(): MediaType = CONTENT_TYPE

import org.opensearch.index.query.RangeQueryBuilder;
import org.opensearch.index.query.RegexpQueryBuilder;
import org.opensearch.index.query.SpanTermQueryBuilder;
import org.opensearch.index.query.TermQueryBuilder;
import org.opensearch.index.query.TermsQueryBuilder;
import org.opensearch.index.query.WildcardQueryBuilder;
import org.opensearch.index.query.functionscore.FunctionScoreQueryBuilder;

    public boolean isUrlSet() {
        return URLSET.equals(type);
    }

    /**
     * Checks if this sitemap set is of type INDEX.
     * @return true if this is an INDEX, false otherwise
     */
    public boolean isIndex() {
        return INDEX.equals(type);
    }

    /**
     * Returns a string representation of this object.
     * @return A string representation.
     */
    @Override

    /**
     * Specifies a single quantile index to be calculated, i.e. the k in the kth q-quantile.
     *
     * @param index the quantile index, which must be in the inclusive range [0, q] for q-quantiles
     */
    public ScaleAndIndex index(int index) {
      return new ScaleAndIndex(scale, index);
    }

    /**
     * Specifies multiple quantile indexes to be calculated, each index being the k in the kth
     * q-quantile.