code: func Src(diffs []diffmatchpatch.Diff) string {
  	var text bytes.Buffer
  	for _, d := range diffs {
  		if d.Type != diffmatchpatch.DiffInsert {
  			text.WriteString(d.Text)
  		}
  	}
  	return text.String()
  }
docs: // Src computes and returns the source text