Fix implicit conversion for mapped over inputs

                element_identifier = element_identifier_mapper.identifier(dataset, param_dict)

                if element_identifier:

                    wrapper_kwds["identifier"] = element_identifier

                wrapper_kwds["formats"] = input.formats

                input_values[input.name] = DatasetFilenameWrapper(dataset, **wrapper_kwds)

            elif isinstance(input, DataCollectionToolParameter):

                dataset_collection = value