docs: public void marshall(CreateUserRequest createUserRequest, ProtocolMarshaller protocolMarshaller) {
  
          if (createUserRequest == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(createUserRequest.getUsername(), USERNAME_BINDING);
              protocolMarshaller.marshall(createUserRequest.getPassword(), PASSWORD_BINDING);
              protocolMarshaller.marshall(createUserRequest.getIdentityInfo(), IDENTITYINFO_BINDING);
              protocolMarshaller.marshall(createUserRequest.getPhoneConfig(), PHONECONFIG_BINDING);
              protocolMarshaller.marshall(createUserRequest.getDirectoryUserId(), DIRECTORYUSERID_BINDING);
              protocolMarshaller.marshall(createUserRequest.getSecurityProfileIds(), SECURITYPROFILEIDS_BINDING);
              protocolMarshaller.marshall(createUserRequest.getRoutingProfileId(), ROUTINGPROFILEID_BINDING);
              protocolMarshaller.marshall(createUserRequest.getHierarchyGroupId(), HIERARCHYGROUPID_BINDING);
              protocolMarshaller.marshall(createUserRequest.getInstanceId(), INSTANCEID_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }