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";
    }

    /**
     * Constructor for SuggestSettings.
     * @param client The OpenSearch client.