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