Import DDL file from workspace location does not work. File not found

Trying to import a DDL file from a workspace location cannot find the designated file.

The workspace relative path is shown and stored in the DdlImporter and combo-box text, however, the importer expects an existing Java File location.

Need to convert the selected IResource/IFile to a file and use that path instead:

>>> final File realFile = choice.getLocation().toFile();