/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/Unity/Application/qmldir is in unity8-fake-env 8.12+16.04.20160401-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | module Unity.Application
plugin FakeUnityApplicationQml
typeinfo Application.qmltypes
|