docs: public void marshall(VaultNotificationConfig vaultNotificationConfig, ProtocolMarshaller protocolMarshaller) {
  
          if (vaultNotificationConfig == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(vaultNotificationConfig.getSNSTopic(), SNSTOPIC_BINDING);
              protocolMarshaller.marshall(vaultNotificationConfig.getEvents(), EVENTS_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }