100644 blob 2d29183c8a04240df2c05db5fce071b4bd06f661	DeviceNull.cpp
100644 blob dee944aabda07d4710537aaf15df3a8dc42d0a68	DeviceNull.h
100644 blob a48dcdccc4e9dbfca755a64123ea1204da6e0c32	NullBackend.cpp