Adding arbitrary filetypes to a qmlproject

[cochise]

I'm playing with the flying bus demo, and the levels informatios is stored in XML files.
QtCreator can read and edit XML files as text files with hilight, identations and more, but i can't include xml files in the project tree.

The .qmlproject appear only work with js, qml and images.

@ QmlFiles {
directory: "."
}
JavaScriptFiles {
directory: "."
}
ImageFiles {
directory: "."
}@

It's possible add a OtherFiles ou ArbitraryFiles?