code: func (h Headers) Size(e bool) int64 {
  	l := 0
  	for i := 0; i < len(h); i += 2 {
  		if e {
  			l += len(encode(h[i])) + 1 + len(encode(h[i+1])) + 1
  		} else {
  			l += len(h[i]) + 1 + len(h[i+1]) + 1
  		}
  	}
  	return int64(l)
  }
docs: /*
  	Size returns the size of Headers on the wire, in bytes.
  */