import org.opensearch.action.admin.indices.alias.Alias;
import org.opensearch.action.admin.indices.alias.IndicesAliasesRequestBuilder;
import org.opensearch.action.admin.indices.alias.get.GetAliasesResponse;
import org.opensearch.action.admin.indices.create.CreateIndexResponse;
import org.opensearch.action.admin.indices.exists.indices.IndicesExistsResponse;
import org.opensearch.action.admin.indices.get.GetIndexResponse;

    }

    /**
     * Prepares a stream search request builder with the given indices.
     *
     * @param indices The indices to search.
     * @return The stream search request builder.
     */
    @Override
    public SearchRequestBuilder prepareStreamSearch(final String... indices) {
        return prepareSearch(indices);
    }

    @Override

import org.codelibs.fess.suggest.util.SuggestUtil;
import org.opensearch.action.admin.indices.analyze.AnalyzeAction;
import org.opensearch.action.admin.indices.analyze.AnalyzeAction.AnalyzeToken;
import org.opensearch.action.admin.indices.exists.indices.IndicesExistsResponse;
import org.opensearch.action.admin.indices.settings.get.GetSettingsResponse;
import org.opensearch.action.search.SearchResponse;

        method.setAccessible(true);
        final List<String> indices = (List<String>) method.invoke(suggester, aliasName);

        assertNotNull("Indices list should not be null", indices);
        assertEquals("Should find exactly two indices", 2, indices.size());
        assertTrue("Should contain first index", indices.contains(index1));
        assertTrue("Should contain second index", indices.contains(index2));

        // Cleanup

            final String docIndex = fessConfig.getIndexDocumentUpdateIndex();
            searchEngineClient.admin().indices().prepareClose(docIndex).execute(ActionListener.wrap(res -> {
                logger.info("Closing index: {}", docIndex);
                searchEngineClient.admin()
                        .indices()
                        .prepareOpen(docIndex)

            assertEquals(0, response.writeParameterWordsWireFormat(null, 0));
        }

        @ParameterizedTest
        @ValueSource(ints = { 0, 5, 9 })
        @DisplayName("Returns 0 with valid array and various indices")
        void nonNullArray(int index) {
            byte[] arr = new byte[10];
            assertEquals(0, response.writeParameterWordsWireFormat(arr, index));
        }
    }

    @Nested

import org.opensearch.action.admin.indices.alias.IndicesAliasesRequestBuilder;
import org.opensearch.action.admin.indices.create.CreateIndexResponse;
import org.opensearch.action.admin.indices.exists.indices.IndicesExistsResponse;
import org.opensearch.action.admin.indices.flush.FlushResponse;
import org.opensearch.action.admin.indices.get.GetIndexResponse;
import org.opensearch.action.admin.indices.mapping.get.GetMappingsResponse;

 * The implementation contains only trivial methods that return {@code 0}
 * or construct a string representation.  The tests focus on:
 *
 * <ul>
 *   <li>happy‑path behaviour</li>
 *   <li>boundary arguments (e.g., negative indices, large values)</li>
 *   <li>string representation containing the class name</li>
 *   <li>null buffer handling</li>
 * </ul>
 */
final class TransWaitNamedPipeResponseTest {

    /**

         */
        public void setBulkTimeout(final String timeout) {
            this.bulkTimeout = timeout;
        }

        /**
         * Sets the indices timeout.
         * @param timeout The indices timeout.
         */
        public void setIndicesTimeout(final String timeout) {
            this.indicesTimeout = timeout;
        }

        /**

    runner = new OpenSearchRunner();
    runner.build(newConfigs().clusterName("TestCluster").numOfNode(1));
    client = runner.client();
}

@Before
public void before() {
    runner.admin().indices().prepareDelete("_all").execute().actionGet();
}

@AfterClass
public static void afterClass() {
    runner.close();
    runner.clean();
}
```

### Testing Best Practices