docs: public boolean addPassiveScanner(PassiveScanner passiveScanner) {
          if (passiveScanner == null) {
              throw new IllegalArgumentException("Parameter passiveScanner must not be null.");
          }
  
          if (passiveScanner instanceof PluginPassiveScanner) {
              return addPluginPassiveScannerImpl((PluginPassiveScanner) passiveScanner);
          }
          return addPassiveScannerImpl(passiveScanner);
      }