100644 blob fd91585faf3db21c6baec0ca1090b41553f9e460	DeviceNull.cpp
100644 blob 56cb6a82dcc7a8daf06fed66ae58596d4ec2b35b	DeviceNull.h
100644 blob a48dcdccc4e9dbfca755a64123ea1204da6e0c32	NullBackend.cpp