}

    /**
     * Adds an initial facet parameter mapping.
     *
     * @param key the parameter key
     * @param value the parameter value
     */
    public void addInitFacetParam(final String key, final String value) {
        initFacetParamMap.put(value, key);
    }

    /**
     * Gets the initial facet parameter mappings.
     *
     * @return the facet parameter map

        viewHelper.setUseSession(false);
        assertFalse(viewHelper.isUseSession());

        viewHelper.setUseSession(true);
        assertTrue(viewHelper.isUseSession());

        viewHelper.addInitFacetParam("key1", "value1");
        assertEquals("key1", viewHelper.getInitFacetParamMap().get("value1"));

        viewHelper.addInitGeoParam("key2", "value2");