code: public static synchronized void update(Map<String, Object> newConfig) {
          if (newConfig == null)
              throw new NullPointerException("Updated config must not be null");
  
          // Update the logging configuration
          LogProviderConfig config = loggingConfig.get();
          if (config != null) {
              config.update(newConfig);
              // Propagate updates to the delegate
              getDelegate().update(config);
          }
      }
docs: Update FFDC service with new configuration values (based on injection via config
  admin). The parameter map should be modified to match actual values used
  (e.g. substitution in case of error).
  
  @param newConfig