docs: public void marshall(CreateGroupRequest createGroupRequest, ProtocolMarshaller protocolMarshaller) {
  
          if (createGroupRequest == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(createGroupRequest.getGroupName(), GROUPNAME_BINDING);
              protocolMarshaller.marshall(createGroupRequest.getUserPoolId(), USERPOOLID_BINDING);
              protocolMarshaller.marshall(createGroupRequest.getDescription(), DESCRIPTION_BINDING);
              protocolMarshaller.marshall(createGroupRequest.getRoleArn(), ROLEARN_BINDING);
              protocolMarshaller.marshall(createGroupRequest.getPrecedence(), PRECEDENCE_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }