code: public <Parameter, Result> Result accept(ITypeReferenceVisitorWithParameter<Parameter, Result> visitor, Parameter parameter)
  	{
  		// TODO: implement this method
  		// Ensure that you remove @generated or mark it @generated NOT
  		throw new UnsupportedOperationException();
  	}
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated