#include <DataFormats/Common/interface/refcore_implementation.h>
Description: provide function implementations to use with both RefCore and RefCoreWithIndex
Usage: RefCore and RefCoreWithIndex are essentially the same except RefCoreWithIndex provides an additional index storage. Because of the exact way ROOT does storage, RefCoreWithIndex can't be made to inherit from RefCore (without causing meta data overhead). Therefore the implementations shared by the two classes are contained here.