: nsSharedBufferHandle(aDataStart, aDataEnd),
: nsSharedBufferHandle<CharT>(aDataStart, aDataEnd),
      nsXXXBufferHandle( CharT* aDataStart, CharT* aDataEnd, CharT* aStorageStart, CharT* aStorageEnd )          : nsSharedBufferHandle(aDataStart, aDataEnd),            mStorageStart(aStorageStart),            mStorageEnd(aStorageEnd)        {          mFlags |= kIsStorageDefinedSeparately;        }