Maybe in tranformations

gistfile1.txt

        private IEnumerable<ProductAdvisorStep> MapSteps(ChildList children)
        {
            return children.SelectMany(GetStep);
        }

        private Maybe<ProductAdvisorStep> GetStep(Item item, int index)
        {
            string facetName =
                Context.Database.GetItem(item.Fields[ProductAdvisorDataFields.StepFacetField]?.Value)?.Name;

            if (string.IsNullOrEmpty(facetName))
            {
                logger.Error("A Facet is required for a ProductAdvisorStep.");
                return Maybe.Empty<ProductAdvisorStep>();
            }

            return new ProductAdvisorStep
            {
                Key = index + 1,
                Title = item.Fields[ProductAdvisorDataFields.StepQuestionField].Value,
                Facet = facetName
            }.ToMaybe();
        }