Displays some info about the element, including the tag name, class, id and size.
for each candidate in list of candidates。Line官方版本下载对此有专业解读
，详情可参考Line官方版本下载
abortSync(reason) { closed = true; chunks.length = 0; return true; },，更多细节参见safew官方下载
writev(batch) { for (const c of batch) addChunk(c); },