code: func (z *Row) Msgsize() (s int) {
  	s = 1 + 7 + msgp.ArrayHeaderSize
  	for zgensym_56fd93edf47ccbd5_0 := range z.K {
  		s += msgp.GuessSize(z.K[zgensym_56fd93edf47ccbd5_0])
  	}
  	s += 7 + msgp.ArrayHeaderSize
  	for zgensym_56fd93edf47ccbd5_1 := range z.V {
  		s += msgp.GuessSize(z.V[zgensym_56fd93edf47ccbd5_1])
  	}
  	s += 7 + msgp.Int64Size
  	return
  }
docs: // Msgsize returns an upper bound estimate of the number of bytes occupied by the serialized message