docs: public void marshall(ListUserGroupsRequest listUserGroupsRequest, ProtocolMarshaller protocolMarshaller) {
  
          if (listUserGroupsRequest == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(listUserGroupsRequest.getUserName(), USERNAME_BINDING);
              protocolMarshaller.marshall(listUserGroupsRequest.getAwsAccountId(), AWSACCOUNTID_BINDING);
              protocolMarshaller.marshall(listUserGroupsRequest.getNamespace(), NAMESPACE_BINDING);
              protocolMarshaller.marshall(listUserGroupsRequest.getNextToken(), NEXTTOKEN_BINDING);
              protocolMarshaller.marshall(listUserGroupsRequest.getMaxResults(), MAXRESULTS_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }