code: public static void disableProxy() {
          System.clearProperty("http.proxyHost");
          System.clearProperty("http.proxyPort");
          System.clearProperty("http.proxyUserName");
          System.clearProperty("http.proxyUser");
          System.clearProperty("http.proxyPassword");
          System.clearProperty("https.proxyHost");
          System.clearProperty("https.proxyPort");
          System.clearProperty("https.proxyUserName");
          System.clearProperty("https.proxyUser");
          System.clearProperty("https.proxyPassword");
  
          _url = null;
          _port = null;
          _user = null;
          _pwd = null;
          hasProxy = false;
      }
docs: Disable the proxy usage.