import org.codelibs.fess.suggest.analysis.SuggestAnalyzer;
import org.codelibs.fess.suggest.constants.FieldNames;
import org.codelibs.fess.suggest.converter.ReadingConverter;
import org.codelibs.fess.suggest.exception.SuggesterException;
import org.codelibs.fess.suggest.index.SuggestIndexer;
import org.codelibs.fess.suggest.normalizer.Normalizer;
import org.codelibs.fess.suggest.request.popularwords.PopularWordsRequestBuilder;

**Index Lifecycle:**
```java
suggester.createIndexIfNothing();      // Initial setup
suggester.createNextIndex();            // Create new index
// ... indexing operations ...
suggester.switchIndex();                // Switch to new index
suggester.removeDisableIndices();       // Cleanup old indices
```

**Async Operations:**
```java
suggester.suggest()
    .setQuery("search")
    .execute()

 */
package org.codelibs.fess.suggest;

import java.io.IOException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

import org.codelibs.fess.suggest.analysis.SuggestAnalyzer;
import org.codelibs.fess.suggest.converter.ReadingConverter;
import org.codelibs.fess.suggest.exception.SuggesterException;
import org.codelibs.fess.suggest.normalizer.Normalizer;

        }
    }

    /**
     * Gets the suggester instance.
     *
     * @return The suggester instance.
     */
    public Suggester suggester() {
        return suggester;
    }

    /**
     * Stores search logs in the suggest index.
     */
    public void storeSearchLog() {
        final SearchLogBhv searchLogBhv = ComponentUtil.getComponent(SearchLogBhv.class);

        runner.refresh();
        suggester = Suggester.builder().build(runner.client(), "PopularWordsRequestTest");
        suggester.createIndexIfNothing();
    }

    @Test
    public void test_basicRequest() throws Exception {
        indexQueryItems();

        PopularWordsResponse response = suggester.popularWords().setSize(10).execute().getResponse();

        assertNotNull(response);

        Suggester suggester = createSuggester();

        // Multiple consecutive calls should be safe
        suggester.createIndexIfNothing();
        suggester.createIndexIfNothing();
        suggester.createIndexIfNothing();

        // Should still be able to use the index
        suggester.refresh();
        assertEquals("Index should work normally", 0, suggester.getAllWordsNum());
    }

        runner.refresh();
        suggester = Suggester.builder().build(runner.client(), "SuggesterTest");
        suggester.createIndexIfNothing();
    }

    @Test
    public void test_Read() throws Exception {
        String indexName = "test-index";
        Client client = runner.client();
        SuggestSettings settings = suggester.settings();
        int num = 10000;

        runner.refresh();
        suggester = Suggester.builder().build(runner.client(), "PopularWordsRequestBuilderTest");
        suggester.createIndexIfNothing();
    }

    @Test
    public void test_basicBuilder() throws Exception {
        indexItems();

        PopularWordsResponse response = suggester.popularWords().execute().getResponse();

        assertNotNull(response);
    }

        final Suggester suggester = Suggester.builder().build(client, "test");

        // Use reflection to access private method
        final Method method = Suggester.class.getDeclaredMethod("getIndicesForAlias", String.class);
        method.setAccessible(true);
        final List<String> indices = (List<String>) method.invoke(suggester, aliasName);

        runner.refresh();
        suggester = Suggester.builder().build(client, "ScrollTest");
        suggester.createIndexIfNothing();
    }

    @Test
    public void testScrollSearch_emptyResults() {
        // Create index without any documents
        createTestIndex();

        List<String> results = ScrollOperationHelper.scrollSearch(client, suggester.settings(), INDEX_NAME, QueryBuilders.matchAllQuery(),