Qt Quick Controls 2 module undocumented

Qt Quick Controls 2 has a C++ API:

https://doc.qt.io/qt-5/qtquickcontrols2-module.html

However, it doesn't seem to exist in Qbs:

https://doc.qt.io/qbs/qt-modules.html#list-of-submodules

I've tried several variations of Depends but none of them worked. E.g.:

Depends { name: "Qt.quick.controls" }

/Users/mitch/dev/slate/app/app.qbs:10: warning: Dependency 'Qt.quick.controls' not found for product 'app'.