code: String
  rrToString() {
  	StringBuffer sb = new StringBuffer();
  	sb.append(flags);
  	sb.append(" ");
  	sb.append(proto);
  	sb.append(" ");
  	sb.append(alg);
  	if (key != null) {
  		if (Options.check("multiline")) {
  			sb.append(" (\n");
  			sb.append(base64.formatString(key, 64, "\t", true));
  			sb.append(" ; key_tag = ");
  			sb.append(getFootprint());
  		} else {
  			sb.append(" ");
  			sb.append(base64.toString(key));
  		}
  	}
  	return sb.toString();
  }
docs: Converts the DNSKEY/KEY Record to a String