100644 blob a821acfa5a440a139addb881f70dd9dd5c30c253	DeviceNull.cpp
100644 blob 9a73a9b2f2f536e34801da061d40ab0c43d5ac28	DeviceNull.h
100644 blob a48dcdccc4e9dbfca755a64123ea1204da6e0c32	NullBackend.cpp