如何看懂 objc 的这段代码？

Question

  const attribStr = NSAttributedString.attributedStringWithString_attributes_(
    string,
    attribs
  );
  const msAttribStr = MSAttributedString.alloc().initWithAttributedString(
    attribStr
  );

这是 react-sketchapp 里面的一段

请问现在我已经得到了 msAttribStr log 为 <MSAttributedString: 0x7fefa8ef86a0>

如何能反向获得 attribStr 进而获得 string attribs 的值呢

完全不懂 objc 特来跪求这几句的意思 =。=