def PrependUOffsetTRelative(self, off):
        """Prepends an unsigned offset into vector data, relative to where it
        will be written.
        """

        # Ensure alignment is already done:
        self.Prep(N.UOffsetTFlags.bytewidth, 0)
        if not (off <= self.Offset()):
            msg = "flatbuffers: Offset arithmetic error."
            raise OffsetArithmeticError(msg)
        off2 = self.Offset() - off + N.UOffsetTFlags.bytewidth
        self.PlaceUOffsetT(off2)
def PrependUOffsetTRelative ( self , off ) : self . Prep ( N . UOffsetTFlags . bytewidth , 0 ) if not ( off <= self . Offset ( ) ) : msg = "flatbuffers: Offset arithmetic error." raise OffsetArithmeticError ( msg ) off2 = self . Offset ( ) - off + N . UOffsetTFlags . bytewidth self . PlaceUOffsetT ( off2 )
Prepends an unsigned offset into vector data, relative to where it
        will be written.