*/
    @Test
    public void testPrefix() throws Exception {
        final CopyOptions option = new CopyOptions();
        assertThat(option.prefix(BeanNames.search_()), is(sameInstance(option)));
        assertThat(option.prefix, is("search_"));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testBeanDelimiter() throws Exception {
        final CopyOptions option = new CopyOptions();

            return createCharSequence("abc_exclude");
        }

        /**
         * @return CharSequence
         */
        public static CharSequence search_() {
            return createCharSequence("search_");
        }

        /**
         * @return CharSequence
         */
        public static CharSequence abc_() {
            return createCharSequence("abc_");

        public long getCurrentTimeAsLong() {
            return System.currentTimeMillis();
        }

        @Override
        public String getSearchRoleByRole(String role) {
            return "search_" + role;
        }
    }

    static class MockPermissionHelper extends PermissionHelper {
        public MockPermissionHelper() {
            this.systemHelper = new MockSystemHelper();
        }
    }

    }

    /**
     * Performs a search using only the main searcher without rank fusion.
     * This method is used when only one searcher is available or configured.
     *
     * @param searcher the main searcher to use for the search operation
     * @param query the search query string
     * @param params search request parameters including pagination and filters

    public void test_getSearchFields() {
        String[] fields = { "search1", "search2", "search3" };
        queryFieldConfig.setSearchFields(fields);

        String[] result = queryFieldConfig.getSearchFields();
        assertSame(fields, result);
    }

    public void test_setSearchFields() {
        String[] fields = { "search1", "search2", "search3" };
        queryFieldConfig.setSearchFields(fields);

     */
    @Size(max = 1000)
    public String notificationTo;

    /**
     * Enable or disable search suggestions based on search logs.
     * When enabled, suggestions are generated from previous searches.
     */
    @Size(max = 10)
    public String suggestSearchLog;

    /**
     * Enable or disable search suggestions based on document content.
     * When enabled, suggestions are generated from indexed documents.

          @ParametricNullness E key,
          List<? extends E> list,
          int foundIndex) {
        // Of course, we have to use binary search to find the precise
        // breakpoint...
        int lower = 0;
        int upper = foundIndex;
        // Of course, we have to use binary search to find the precise breakpoint...
        // Everything between lower and upper inclusive compares at <= 0.
        while (lower < upper) {

A powerful Java library that provides intelligent search suggestion functionality built on top of OpenSearch/Elasticsearch. It offers auto-completion, query suggestions, and popular word analytics for search applications.

## Key Features

- **Smart Query Suggestions**: Real-time auto-completion and search suggestions

import org.lastaflute.web.util.LaRequestUtil;
import org.opensearch.action.search.SearchRequestBuilder;
import org.opensearch.action.search.SearchResponse;
import org.opensearch.common.document.DocumentField;
import org.opensearch.search.SearchHit;
import org.opensearch.search.SearchHits;
import org.opensearch.search.aggregations.Aggregations;
import org.opensearch.search.fetch.subphase.highlight.HighlightField;

/**

    /** Array of fields to be included in standard search response */
    protected String[] responseFields;

    /** Array of fields to be included in scroll search response */
    protected String[] scrollResponseFields;

    /** Array of fields to be included in cache search response */
    protected String[] cacheResponseFields;

    /** Array of fields that can be highlighted in search results */
    protected String[] highlightedFields;