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) {

        when(mockClient.prepareSearch(any(String[].class))).thenReturn(mockBuilder);
        when(mockBuilder.setPreference(any(String.class))).thenReturn(mockBuilder);

        fesenClient.setSearchPreference("_local");

        final SearchRequestBuilder result1 = fesenClient.prepareSearch("index1");
        final SearchRequestBuilder result2 = fesenClient.prepareStreamSearch("index1");