/**
     * Adds an initial setting.
     * @param key The key of the setting.
     * @param value The value of the setting.
     * @return This builder instance.
     */
    public SuggestSettingsBuilder addInitialSettings(final String key, final Object value) {
        initialSettings.put(key, value);
        return this;
    }

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