code: public void printAllExtensions() {
          Extension[] exts = getExtensionList();
  
          System.out.println("There are totally " + exts.length + " plugin(s) registered.");
  
          for (int i = 0; i < exts.length; i++) {
              System.out.println("\n ---- Plugin # " + (i + 1) + " ---- ");
              System.out.println("Key: " + exts[i].getKey());
              System.out.println("Version: " + exts[i].getVersion());
              System.out.println("Registration Time: " + exts[i].getLastHeartbeatTime().getTime());
              System.out.println("Configuration URL: " + exts[i].getServer()[0].getUrl());
          }
      }
docs: Print out information of all the plugins to stdout
  
  @deprecated