code: func (po *Po) parseID(l string) {
  	// Save current Translation buffer.
  	po.saveBuffer()
  
  	// Set id
  	po.trBuffer.ID, _ = strconv.Unquote(strings.TrimSpace(strings.TrimPrefix(l, "msgid")))
  }
docs: // parseID takes a line starting with "msgid",
  // saves the current Translation and creates a new msgid buffer.