code: public void marshall(Activation activation, ProtocolMarshaller protocolMarshaller) {
  
          if (activation == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(activation.getActivationId(), ACTIVATIONID_BINDING);
              protocolMarshaller.marshall(activation.getDescription(), DESCRIPTION_BINDING);
              protocolMarshaller.marshall(activation.getDefaultInstanceName(), DEFAULTINSTANCENAME_BINDING);
              protocolMarshaller.marshall(activation.getIamRole(), IAMROLE_BINDING);
              protocolMarshaller.marshall(activation.getRegistrationLimit(), REGISTRATIONLIMIT_BINDING);
              protocolMarshaller.marshall(activation.getRegistrationsCount(), REGISTRATIONSCOUNT_BINDING);
              protocolMarshaller.marshall(activation.getExpirationDate(), EXPIRATIONDATE_BINDING);
              protocolMarshaller.marshall(activation.getExpired(), EXPIRED_BINDING);
              protocolMarshaller.marshall(activation.getCreatedDate(), CREATEDDATE_BINDING);
              protocolMarshaller.marshall(activation.getTags(), TAGS_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.