*
     * @param params the parameter map to copy, must not be null
     */
    protected DataStoreParams(final Map<String, Object> params) {
        this.params = new ParamMap<>(new HashMap<>(getDataMap(params)));
    }

    /**
     * Stores a parameter value with the specified key.
     *
     * @param key the parameter key, must not be null
     * @param value the parameter value, may be null
     */

        assertEquals(123, data.getDataMap().get("int"));

        RenderDataUtil.register(data, "long", 456L);
        assertEquals(456L, data.getDataMap().get("long"));

        RenderDataUtil.register(data, "boolean", true);
        assertEquals(true, data.getDataMap().get("boolean"));

        RenderDataUtil.register(data, "double", 3.14);
        assertEquals(3.14, data.getDataMap().get("double"));
    }

    @Test