Validation <Error, UpdateAnnotationTypeCommand> ValidateUpdateAnnotationTypeCommand(UpdateAnnotationTypeCommand cmd) => from x in ValidateNonNull(cmd) from y in (
public Try <Validation <Error, AnnotationTypeDto> > Execute(UpdateAnnotationTypeCommand cmd) => () => from x in ValidateUpdateAnnotationTypeCommand(cmd) let y = x.ToAnnotationType() let z = _repository.Update(y) select z.ToAnnotationTypeDto();