docs: public void marshall(SetUserMFAPreferenceRequest setUserMFAPreferenceRequest, ProtocolMarshaller protocolMarshaller) {
  
          if (setUserMFAPreferenceRequest == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(setUserMFAPreferenceRequest.getSMSMfaSettings(), SMSMFASETTINGS_BINDING);
              protocolMarshaller.marshall(setUserMFAPreferenceRequest.getSoftwareTokenMfaSettings(), SOFTWARETOKENMFASETTINGS_BINDING);
              protocolMarshaller.marshall(setUserMFAPreferenceRequest.getAccessToken(), ACCESSTOKEN_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }