code: public static Map<String, String[]> getParameterMap()
  	{
  		final Request request = RequestCycle.get().getRequest();
  		return getParameterMap(request);
  	}
docs: Gets a map with all parameters. Looks in the query and post parameters. Migration method from
  1.4.* to 1.5.*.
  
  @return a map with all parameters.