SuggestSettingsBuilder result = builder.clusterTimeout("15s");
        assertEquals(builder, result); // Test method chaining
        assertEquals("15s", builder.timeoutSettings.clusterTimeout);

        // Test updating cluster timeout
        builder.clusterTimeout("90s");
        assertEquals("90s", builder.timeoutSettings.clusterTimeout);
    }

    @Test
    public void testBuildWithDefaults() {

        /** Bulk timeout. */
        protected String bulkTimeout = "1m";
        /** Indices timeout. */
        protected String indicesTimeout = "1m";
        /** Cluster timeout. */
        protected String clusterTimeout = "1m";
        /** Scroll timeout. */
        protected String scrollTimeout = "1m";

        /**
         * Sets the search timeout.
         * @param timeout The search timeout.
         */

        return this;
    }

    /**
     * Sets the cluster timeout.
     * @param timeout The cluster timeout.
     * @return This builder instance.
     */
    public SuggestSettingsBuilder clusterTimeout(final String timeout) {
        timeoutSettings.setClusterTimeout(timeout);
        return this;
    }

    /**
     * Builds a SuggestSettings instance.
     * @param client The OpenSearch client.

        settingsBuilder.addInitialSettings("search_engine.type", fessConfig.getFesenType());
        settingsBuilder.bulkTimeout(fessConfig.getIndexBulkTimeout());
        settingsBuilder.clusterTimeout(fessConfig.getIndexHealthTimeout());
        settingsBuilder.indexTimeout(fessConfig.getIndexIndexTimeout());
        settingsBuilder.indicesTimeout(fessConfig.getIndexIndicesTimeout());