code: public static aaauser[] get_filtered(nitro_service service, String filter) throws Exception{
  		aaauser obj = new aaauser();
  		options option = new options();
  		option.set_filter(filter);
  		aaauser[] response = (aaauser[]) obj.getfiltered(service, option);
  		return response;
  	}
docs: Use this API to fetch filtered set of aaauser resources.
  filter string should be in JSON format.eg: "port:80,servicetype:HTTP".