Hi! I’ve been looking through the [Emscripten File System API docs](https://emscripten.org/docs/api_reference/Filesystem-API.html), but it seems that some APIs implemented in Emscripten are not documented there. For example, [`mkdirTree`](https://github.com/emscripten-core/emscripten/blob/00b76f81f6474113fcf540db69297cfeb180347e/src/lib/libfs.js#L755) exists in the source code, but I couldn’t find it in either the main docs or the [advanced File System API section](https://emscripten.org/docs/api_reference/advanced-apis.html#advanced-file-system-api). Is there any specific reason why certain APIs are omitted from the documentation? Thanks!