It can be helpful to import a web service or REST interface definition as a model. Then you can use the classes like this Import XML and JSon with MDriven.

MDriven Designer can't import an XSD och WDSL directly.

Sparx, on the other hand, can import schemas and export them to XMI, which in turn can be imported by MDriven Designer.

Importing XSD with Sparx

Using Sparx, edit and clean up the imported model. Usually, you will want to remove all "elements," keeping on the classes.

When it is ready, export the model using XML with UML 2.4.1 and XMI 2.4.2.

Note! MDriven ONLY supports XMI 2.4.2