Upload an asset that is 5mb or greater to a libarary

Hi!

I’d like to upload a mp4 file that is 5mb or greater to a creative cloud libarary.
I read this documents.
multipart-uploads

It says,

Uploading an asset that is 5mb or greater requires a different usage pattern than the above. In this case, we will: (1) initiate an upload, (2) split the asset into chunks, (3) upload each chunk separately, (4) finalize the upload, and lastly, (5) create the new element. … coming soon …

I couldn’t understand how to split the asset into chunk.

This API(Upload An Asset To A Library) says Request Body Schema is “multipart/form-data”. What do I need to do to split “multipart/form-data” into chunk?
Do you have Any sample code??

Thanks