docs: public boolean isRevoked(final boolean defaultRevocationState) {
          var revoked = true;
          try {
              final var url = getRevocationURL();
              if (url == null) {
                  return false;
              }
              final var con = httpHandler.open(url);
              con.setUseCaches(false);
              if (con instanceof HttpURLConnection) {
                  final var hCon = (HttpURLConnection) con;
                  hCon.connect();
                  return httpHandler.responseCode(hCon) != HttpURLConnection.HTTP_OK;
              }
              return false;
          } catch (final IOException exception) {
              revoked = defaultRevocationState;
          }
          return revoked;
      }