public @Test void testAddMultiValueParameters()
{
HashMap params = new HashMap();
params.put("a", new String[] { "a", "b", "c" });
InvocationHandler handler = new ServletAdaptor("/test", params);
LinkTool link = newLinkTool(handler);
String url = link.setRelative("/target")
.addQueryData("foo", "bar")
.addQueryData("bar", "baz")
.addAllParameters()
.toString();