100644 blob fb11d59ba475500b10d2b9eae7f4caee42541ffe	DeviceNull.cpp
100644 blob 7a938224c5a7eb4b9c148c19aca19729004c8043	DeviceNull.h
100644 blob a48dcdccc4e9dbfca755a64123ea1204da6e0c32	NullBackend.cpp