docs: private static boolean isSecure(String protocol) throws BugError {
  		if (HTTP.equalsIgnoreCase(protocol)) {
  			return false;
  		} else if (HTTPS.equalsIgnoreCase(protocol)) {
  			return true;
  		} else {
  			throw new BugError("Unsupported protocol |%s| for HTTP transaction.", protocol);
  		}
  	}