iterDownload terrible documentation

[Buffon-tries]

Hello everyone, I wanted to use iterDownload to stream download files. but when I wanted to use iterDownload, I initially copied the code give in the docs but:

• the code had syntax errors
• the code does not explain anything. for example what if I want to use a video instead of a photo? what does size mean? it's not defined, where do I get it from? how do I know what to set the offset as? what about the limit?

btw this is what I'm referring to:

for await (const chunk of client.iterDownload({
      file: new Api.InputPhotoFileLocation({
         id: photo.id,
         accessHash: photo.accessHash,
         fileReference: photo.fileReference,
         thumbSize: size.type
     }),
     offset: start,
     limit: end,
     requestSize:2048*1024
)){
    console.log("Downloaded chunk of size",chunk.length);
};