docs: private void genGoogMsgCodeForPlaceholder(
        SoyMsgPlaceholderPart placeholder,
        MsgNode msgNode,
        GoogMsgPlaceholderCodeGenInfo codeGenInfo) {
      // For plural/select, the placeholder is an ICU placeholder, i.e. kept in all-caps. But for
      // goog.getMsg(), we must change the placeholder name to lower camel-case format.
      String googMsgPlaceholderName =
          codeGenInfo.isPlrselMsg
              ? placeholder.getPlaceholderName()
              : genGoogMsgPlaceholderName(placeholder.getPlaceholderName());
      if (codeGenInfo.placeholders.contains(googMsgPlaceholderName)) {
        return;
      }
      MsgPlaceholderNode reprNode = msgNode.getRepPlaceholderNode(placeholder.getPlaceholderName());
  
      codeGenInfo.placeholders.put(googMsgPlaceholderName, genGoogMsgPlaceholder(reprNode));
    }