code: func (m *Message) Size(e bool) int64 {
  	var r int64 = 0
  	r += int64(len(m.Command)) + 1 + m.Headers.Size(e) + 1 + int64(len(m.Body)) + 1
  	return r
  }
docs: /*
  	Size returns the size of Message on the wire, in bytes.
  */