this.connTimeout = connTimeout;
    }

    /**
     * Sets the search preference for search requests.
     *
     * @param searchPreference The search preference.
     */
    public void setSearchPreference(final String searchPreference) {
        this.searchPreference = searchPreference;
    }

    @Override
    public FieldCapabilitiesRequestBuilder prepareFieldCaps(final String... indices) {