docs: public void marshall(CreateSkillGroupRequest createSkillGroupRequest, ProtocolMarshaller protocolMarshaller) {
  
          if (createSkillGroupRequest == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(createSkillGroupRequest.getSkillGroupName(), SKILLGROUPNAME_BINDING);
              protocolMarshaller.marshall(createSkillGroupRequest.getDescription(), DESCRIPTION_BINDING);
              protocolMarshaller.marshall(createSkillGroupRequest.getClientRequestToken(), CLIENTREQUESTTOKEN_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }