SuggestSettingsBuilder result = builder.indexTimeout("20s");
        assertEquals(builder, result); // Test method chaining
        assertEquals("20s", builder.timeoutSettings.indexTimeout);

        // Test updating index timeout
        builder.indexTimeout("60s");
        assertEquals("60s", builder.timeoutSettings.indexTimeout);
    }

    @Test
    public void testBulkTimeout() {

    }

    public void setSearchTimeout(String searchTimeout) {
        this.searchTimeout = searchTimeout;
    }

    public void setIndexTimeout(String indexTimeout) {
        this.indexTimeout = indexTimeout;
    }

    public void setScrollSearchTimeout(String scrollSearchTimeout) {
        this.scrollSearchTimeout = scrollSearchTimeout;
    }

    }

    public void setSearchTimeout(String searchTimeout) {
        this.searchTimeout = searchTimeout;
    }

    public void setIndexTimeout(String indexTimeout) {
        this.indexTimeout = indexTimeout;
    }

    public void setScrollSearchTimeout(String scrollSearchTimeout) {
        this.scrollSearchTimeout = scrollSearchTimeout;
    }

    }

    public void setSearchTimeout(String searchTimeout) {
        this.searchTimeout = searchTimeout;
    }

    public void setIndexTimeout(String indexTimeout) {
        this.indexTimeout = indexTimeout;
    }

    public void setScrollSearchTimeout(String scrollSearchTimeout) {
        this.scrollSearchTimeout = scrollSearchTimeout;
    }

        public TimeoutSettings() {
            // nothing
        }

        /** Search timeout. */
        protected String searchTimeout = "15s";
        /** Index timeout. */
        protected String indexTimeout = "1m";
        /** Bulk timeout. */
        protected String bulkTimeout = "1m";
        /** Indices timeout. */
        protected String indicesTimeout = "1m";
        /** Cluster timeout. */

        return this;
    }

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

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

// Default values
MAX_READING_NUM = 10
PREFIX_MATCH_WEIGHT = 2.0f
EXPECTED_INDEX_COUNT = 1

// Default timeouts
searchTimeout: 15s
indexTimeout: 1m
bulkTimeout: 1m
```

### Common Workflows

**Index Lifecycle:**
```java
suggester.createIndexIfNothing();      // Initial setup
suggester.createNextIndex();            // Create new index

        settingsBuilder.bulkTimeout(fessConfig.getIndexBulkTimeout());
        settingsBuilder.clusterTimeout(fessConfig.getIndexHealthTimeout());
        settingsBuilder.indexTimeout(fessConfig.getIndexIndexTimeout());
        settingsBuilder.indicesTimeout(fessConfig.getIndexIndicesTimeout());
        settingsBuilder.searchTimeout(fessConfig.getIndexSearchTimeout());