*/
public final class SuggestUtil {
    private static final int MAX_QUERY_TERM_NUM = 5;
    private static final int MAX_QUERY_TERM_LENGTH = 48;

    private static final Base64.Encoder encoder = Base64.getEncoder();

    private static final int ID_MAX_LENGTH = 445;

    /**
     * Private constructor to prevent instantiation.
     */
    private SuggestUtil() {
    }

    /**

    public void setUp() {
        // Setup for each test
    }

    @Test
    public void testPrivateConstructor() throws Exception {
        // Test that SuggestUtil has a private constructor to prevent instantiation
        Constructor<SuggestUtil> constructor = SuggestUtil.class.getDeclaredConstructor();
        assertTrue(Modifier.isPrivate(constructor.getModifiers()));

        // Make it accessible to test it throws no exception

        }

        if (normalizer == null) {
            normalizer = SuggestUtil.createDefaultNormalizer(client, settings);
        }

        if (analyzer == null) {
            analyzer = SuggestUtil.createDefaultAnalyzer(client, settings);
        }

        if (threadPool == null) {
            threadPool = Executors.newFixedThreadPool(threadPoolSize);
        }

        final String[] tags = extractTags(tagFieldNames, tagFieldName -> {
            final List<String> results = new ArrayList<>(Arrays.asList(SuggestUtil.parseQuery(queryString, tagFieldName)));
            if (filterQueryString != null) {
                results.addAll(Arrays.asList(SuggestUtil.parseQuery(filterQueryString, tagFieldName)));
            }
            return results.toArray(new String[0]);
        });

                if (!scrollId.equals(response.getScrollId())) {
                    SuggestUtil.deleteScrollContext(client, scrollId);
                }
                scrollId = response.getScrollId();
            }
        } finally {
            SuggestUtil.deleteScrollContext(client, scrollId);
        }

        return results;
    }

    /**

                if (!scrollId.equals(response.getScrollId())) {
                    SuggestUtil.deleteScrollContext(client, scrollId);
                }
                scrollId = response.getScrollId();
            }
        } finally {
            SuggestUtil.deleteScrollContext(client, scrollId);
        }

import static org.codelibs.opensearch.runner.OpenSearchRunner.newConfigs;
import static org.junit.Assert.assertEquals;

import org.codelibs.fess.suggest.Suggester;
import org.codelibs.fess.suggest.util.SuggestUtil;
import org.codelibs.opensearch.runner.OpenSearchRunner;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;

public class DefaultNormalizerTest {
    static Suggester suggester;

        final List<String> languages = SuggestUtil.getAsList(source.get(FieldNames.LANGUAGES));
        final List<String> kinds = SuggestUtil.getAsList(source.get(FieldNames.KINDS));
        final long timestamp = Long.parseLong(source.get(FieldNames.TIMESTAMP).toString());

        final SuggestItem item = new SuggestItem();
        item.setText(text);

                        SuggestUtil.deleteScrollContext(client, scrollId);
                    }
                }
                scrollId = response.getScrollId();
                final SearchHit[] hits = response.getHits().getHits();
                if (scrollId == null || hits.length == 0) {
                    SuggestUtil.deleteScrollContext(client, scrollId);

                    if (!scrollId.equals(response.getScrollId())) {
                        SuggestUtil.deleteScrollContext(client, scrollId);
                    }
                    scrollId = response.getScrollId();
                }
            } finally {
                SuggestUtil.deleteScrollContext(client, scrollId);
            }

            Arrays.sort(array, (o1, o2) -> {