docs: private static MsgPartsAndIds buildMsgPartsAndComputeMsgIds(
        MsgNode msgNode, boolean doComputeMsgIdUsingBracedPhs) {
  
      ImmutableList<SoyMsgPart> msgParts = buildMsgParts(msgNode);
      long msgId =
          SoyMsgIdComputer.computeMsgId(msgParts, msgNode.getMeaning(), msgNode.getContentType());
      long msgIdUsingBracedPhs =
          doComputeMsgIdUsingBracedPhs
              ? SoyMsgIdComputer.computeMsgIdUsingBracedPhs(
                  msgParts, msgNode.getMeaning(), msgNode.getContentType())
              : -1L;
      return new MsgPartsAndIds(msgParts, msgId, msgIdUsingBracedPhs);
    }