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