code: public PassiveScanner getScanner(int pluginId) {
          for (PassiveScanner scanner : passiveScanners) {
              if (scanner instanceof PluginPassiveScanner) {
                  if (((PluginPassiveScanner)scanner).getPluginId() == pluginId) {
                      return scanner;
                  }
              }
          }
          return null;
      }
docs: Returns the PassiveScan rule with the given id
  @param pluginId
  @return the PassiveScan rule with the given id, or null if not found
  @since TODO add version