100644 blob ab4889cc13fb77f380099338d39e5cd960c32d53	DeviceNull.cpp
100644 blob 0de189a90bbf1ad8f65c3d14b3206f187ad2743d	DeviceNull.h
100644 blob 476f71f86e6d83e50e5ca1fb362a7e676339a4cc	NullBackend.cpp