CSV string importing using the Data Importer

When implementing a API that returns data in a CSV structure, it would be very usefull to import this CSV string directly using the new Data Importer module.

Currently I have to convert the CSV string into a new FileDocument and then import the FileDocument and then delete the Document again (as shown below).

The Import Import with mapping activity already accepts strings for importing. This however does not yet work while using a CSV import document.

Adding this feature would improve the usability of the new data importer and make the implementation of CSV based API's easier and more maintainable.