// Test various complex field names
        String[] fieldNames = { "simple_field", "field-with-dashes", "field.with.dots", "field_with_underscores", "fieldWithCamelCase",
                "field with spaces", "field@with#special!chars", "フィールド名", "字段名称", "필드명" };

        for (String fieldName : fieldNames) {
            String encoded = BaseEncoding.base64().encode(fieldName.getBytes(StandardCharsets.UTF_8));

        }
        filterList.add(buildFilterQuery(FieldNames.ROLES, rolesWithDefault));

        if (!fields.isEmpty()) {
            filterList.add(buildFilterQuery(FieldNames.FIELDS, fields));
        }

        if (!kinds.isEmpty()) {
            filterList.add(buildFilterQuery(FieldNames.KINDS, kinds));
        }

        if (filterList.size() > 0) {

            flist.add(new FunctionScoreQueryBuilder.FilterFunctionBuilder(QueryBuilders.prefixQuery(FieldNames.TEXT, query),
                    ScoreFunctionBuilders.weightFactorFunction(prefixMatchWeight)));
        }

        flist.add(new FunctionScoreQueryBuilder.FilterFunctionBuilder(ScoreFunctionBuilders.fieldValueFactorFunction(FieldNames.DOC_FREQ)
                .missing(0.1f)

import java.lang.Character.UnicodeBlock;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.codelibs.fess.suggest.constants.FieldNames;
import org.codelibs.fess.suggest.constants.SuggestConstants;
import org.codelibs.fess.suggest.entity.SuggestItem;
import org.opensearch.action.search.SearchResponse;
import org.opensearch.search.SearchHit;

/**

| `SuggestSettings.java` | Configuration |
| `SuggestItem.java` | Domain model |
| `DefaultContentsParser.java` | Text processing pipeline |

### Key Constants

```java
// Field names (FieldNames.java)
TEXT, READING_PREFIX, QUERY_FREQ, DOC_FREQ, USER_BOOST, KINDS, TIMESTAMP

// Default values
MAX_READING_NUM = 10
PREFIX_MATCH_WEIGHT = 2.0f
EXPECTED_INDEX_COUNT = 1

// Default timeouts

import java.time.ZonedDateTime;
import java.util.Collections;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;

import org.codelibs.fess.suggest.Suggester;
import org.codelibs.fess.suggest.constants.FieldNames;
import org.codelibs.fess.suggest.constants.SuggestConstants;
import org.codelibs.fess.suggest.entity.ElevateWord;
import org.codelibs.fess.suggest.entity.SuggestItem;

import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;

import org.codelibs.fess.suggest.Suggester;
import org.codelibs.fess.suggest.constants.FieldNames;
import org.codelibs.fess.suggest.constants.SuggestConstants;
import org.codelibs.fess.suggest.entity.SuggestItem;
import org.codelibs.opensearch.runner.OpenSearchRunner;
import org.junit.AfterClass;

        }
        elementsAll.put(fieldName, newArray);
        elementsText.put(fieldName, newArray);
    }

    protected void addFileParameter(final DiskFileItem item) {
        final String fieldName = item.getFieldName();
        final MultipartFormFile formFile = newActionMultipartFormFile(item);
        elementsAll.put(fieldName, formFile);
        elementsFile.put(fieldName, formFile);
    }

        if (result instanceof TermQueryBuilder) {
            TermQueryBuilder termQueryBuilder = (TermQueryBuilder) result;
            assertEquals("field", termQueryBuilder.fieldName());
            assertEquals("value", termQueryBuilder.value());
            assertEquals(2.5f, termQueryBuilder.boost());
        }
    }

    @Test
    public void test_execute_withMatchAllDocsQuery() {

        assertNotNull(deleteQuery);
        assertTrue(deleteQuery instanceof RangeQueryBuilder);
        RangeQueryBuilder rangeQuery = (RangeQueryBuilder) deleteQuery;
        assertEquals("expires", rangeQuery.fieldName());
        assertEquals("now", rangeQuery.to());

        // Assert result is empty when successful
        assertEquals("", result);
    }

    @Test
    public void test_execute_withException() {