code: public String executeCommandOnServlet(String command) {
      try {
        return getCommandResponseAsString(command);
      } catch (IOException e) {
        if (e instanceof ConnectException) {
          throw new SeleniumException(e.getMessage(), e);
        }
        e.printStackTrace();
        throw new UnsupportedOperationException("Catch body broken: IOException from " + command +
            " -> " + e, e);
      }
    }
docs: Sends the specified command string to the bridge servlet
  @param command command to execute
  @return response from the command execution