code: func (f *Fpdf) SetCreator(creatorStr string, isUTF8 bool) {
  	if isUTF8 {
  		creatorStr = utf8toutf16(creatorStr)
  	}
  	f.creator = creatorStr
  }
docs: // SetCreator defines the creator of the document. isUTF8 indicates if the
  // string is encoded in ISO-8859-1 (false) or UTF-8 (true).