boolQueryBuilder.must(QueryBuilders.termQuery(FieldNames.KINDS, SuggestItem.Kind.DOCUMENT.toString()));
        boolQueryBuilder.mustNot(QueryBuilders.termQuery(FieldNames.KINDS, SuggestItem.Kind.QUERY.toString()));
        boolQueryBuilder.mustNot(QueryBuilders.termQuery(FieldNames.KINDS, SuggestItem.Kind.USER.toString()));

### SuggestItem (Domain Entity)
Location: `src/main/java/org/codelibs/fess/suggest/entity/SuggestItem.java`

Core attributes: `text`, `timestamp`, `queryFreq`, `docFreq`, `userBoost`, `readings`, `tags`, `roles`, `languages`, `kinds`

Kind types: `DOCUMENT`, `QUERY`, `USER`

---

## Development Workflow

### Build Commands

```bash
mvn compile                              # Compile

        }
        return deleteWordsByKind(FieldNames.QUERY_FREQ, SuggestItem.Kind.QUERY, item -> item.setQueryFreq(0), SuggestItem.Kind.DOCUMENT,
                SuggestItem.Kind.USER);
    }

    /**
     * Common method to delete words by kind.
     * @param freqField The frequency field name.
     * @param kindToRemove The kind to remove.
     * @param freqSetter The consumer to set frequency to 0.

	modelType := reflect.ValueOf(dest).Type()
	if modelType.Kind() == reflect.Ptr {
		modelType = modelType.Elem()
	}

	if modelType.Kind() != reflect.Struct {
		if modelType.Kind() == reflect.Interface {
			modelType = reflect.Indirect(reflect.ValueOf(dest)).Elem().Type()
		}

		for modelType.Kind() == reflect.Slice || modelType.Kind() == reflect.Array || modelType.Kind() == reflect.Ptr {
			modelType = modelType.Elem()
		}

 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.suggest.index.contents;

import java.io.IOException;

                new String[] { SuggestConstants.DEFAULT_ROLE }, null, SuggestItem.Kind.DOCUMENT);

        SuggestItem item2 = new SuggestItem(new String[] { "テスト" }, readings, new String[] { "content" }, 2, 0, -1, new String[] { "tag2" },
                new String[] { SuggestConstants.DEFAULT_ROLE }, null, SuggestItem.Kind.DOCUMENT);

        SuggestItem[] mergedItems = writer.mergeItems(new SuggestItem[] { item1, item2 });

		dataResults   = map[string][]reflect.Value{}
		loaded        = map[interface{}]bool{}
		notZero, zero bool
	)

	if reflectValue.Kind() == reflect.Ptr ||
		reflectValue.Kind() == reflect.Interface {
		reflectValue = reflectValue.Elem()
	}

	switch reflectValue.Kind() {
	case reflect.Map:
		results = [][]interface{}{make([]interface{}, len(fields))}
		for idx, field := range fields {

                new String[] { SuggestConstants.DEFAULT_ROLE }, null, SuggestItem.Kind.DOCUMENT);
        items[2].setKinds(new SuggestItem.Kind[] { SuggestItem.Kind.DOCUMENT, SuggestItem.Kind.QUERY });

        suggester.indexer().index(items);
        suggester.refresh();

        assertEquals(3, suggester.getAllWordsNum());

		switch association.Relationship.Type {
		case schema.HasOne, schema.BelongsTo:
			switch rv.Kind() {
			case reflect.Slice, reflect.Array:
				if rv.Len() > 0 {
					association.Error = association.Relationship.Field.Set(association.DB.Statement.Context, source, rv.Index(0).Addr().Interface())

					if association.Relationship.Field.FieldType.Kind() == reflect.Struct {

                new String[] { SuggestConstants.DEFAULT_ROLE }, null, SuggestItem.Kind.QUERY));
        items.add(new SuggestItem(new String[] { "word2" }, readings, new String[] { "content" }, 0, 5, -1, new String[] { "tag2" },
                new String[] { SuggestConstants.DEFAULT_ROLE }, null, SuggestItem.Kind.QUERY));

        PopularWordsResponse response = new PopularWordsResponse("test-index", 100, words, 10, items);