code: def Vector(self, off):
          
          N.enforce_number(off, N.UOffsetTFlags)
  
          off += self.Pos
          x = off + self.Get(N.UOffsetTFlags, off)
          # data starts after metadata containing the vector length
          x += N.UOffsetTFlags.bytewidth
          return x
docs: Vector retrieves the start of data of the vector whose offset is
             stored at "off" in this object.