code: /** 
   * Get header parameter values
   * @throws Exception
   */
  @Test public void getParameters() throws Exception {
    handler=new RequestHandler(){
      @Override public void handle(    Request request,    HttpServletResponse response){
        response.setStatus(HTTP_OK);
        response.setHeader("a","value;b=c;d=e");
      }
    }
  ;
    HttpRequest request=get(url);
    assertTrue(request.ok());
    Map<String,String> params=request.parameters("a");
    assertNotNull(params);
    assertEquals(2,params.size());
    assertEquals("c",params.get("b"));
    assertEquals("e",params.get("d"));
  }
  