docs: public void verifyProxyAccess() throws PeachApiException
      {
          stashUnirestProxy();
          
          if(_debug)
              System.out.println(">>verifyProxyAccess");
          
          try
          {
              Logger logger = Logger.getLogger(PeachProxy.class.getName());
              
              HttpResponse<JsonNode> ret = null;
              try {
                  ret = Unirest
                          .get(String.format("%s/", _proxyUrl))
                          .asJson();
              } catch (UnirestException ex) {
                  logger.log(Level.SEVERE, "Error validating access to Peach API Security proxy port.", ex);
                  logger.log(Level.SEVERE, "Please verify correct access to %s. This error is typically");
                  logger.log(Level.SEVERE, "due to incorrect deployment of Peach API Security or a network issue.");
                  logger.log(Level.SEVERE, "Verify access to the port in this URL: %s", _proxyUrl);
                  
                  throw new PeachApiException(
                          String.format("Error validating access to Peach API Security proxy port: %s", ex.getMessage()), ex);
              }
  
              if(ret == null)
              {
                  throw new PeachApiException("Error, in Proxy.sessionSetup: ret was null", null);
              }
  
              if(ret.getStatus() != 200)
              {
                  String errorMsg = String.format("Error verifying proxy port access, incorrect status code via %s: %s %s", 
                          _proxyUrl, ret.getStatus(), ret.getStatusText());
                  
                  logger.log(Level.SEVERE, errorMsg);
                  logger.log(Level.SEVERE, "Please verify correct access to %s. This error is typically", _proxyUrl);
                  logger.log(Level.SEVERE, "due to incorrect deployment of Peach API Security or network issues.");
  
                  throw new PeachApiException(errorMsg, null);
              }
              
              try
              {
                  if(ret.getBody().getObject().getString("ping").equals("pong"))
                  {
                      throw new Exception();
                  }
              }
              catch(Exception ex)
              {
                  String errorMsg = String.format("Error verifying proxy port access, unexpected body: %s", 
                          ret.getBody().toString());
                  
                  logger.log(Level.SEVERE, errorMsg);
                  logger.log(Level.SEVERE, "Please verify correct access to %s. This error is typically", _proxyUrl);
                  logger.log(Level.SEVERE, "due to incorrect deployment of Peach API Security or network issues.");
                  
                  throw new PeachApiException(errorMsg, null);
              }
          }
          finally
          {
              revertUnirestProxy();
          }
      }