code: public void marshall(ActionExecutionInput actionExecutionInput, ProtocolMarshaller protocolMarshaller) {
  
          if (actionExecutionInput == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(actionExecutionInput.getActionTypeId(), ACTIONTYPEID_BINDING);
              protocolMarshaller.marshall(actionExecutionInput.getConfiguration(), CONFIGURATION_BINDING);
              protocolMarshaller.marshall(actionExecutionInput.getRoleArn(), ROLEARN_BINDING);
              protocolMarshaller.marshall(actionExecutionInput.getRegion(), REGION_BINDING);
              protocolMarshaller.marshall(actionExecutionInput.getInputArtifacts(), INPUTARTIFACTS_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.