code: public BucketNotificationConfiguration withNotificationConfiguration(
              Map<String, NotificationConfiguration> notificationConfiguration) {
          configurations.clear();
          configurations.putAll(notificationConfiguration);
          return this;
      }
docs: Sets the given notification configurations and returns this object.
  
  @param notificationConfiguration
  the notification configurations to set
  @return The updated {@link BucketNotificationConfiguration} object.