Question regarding supporting file streaming

[esh-bl]

Hi, I am using docling for parsing long PDF documents (1000s of pages). I wanted to ask if docling supports parsing with file streams (i.e., not downloading the entire file into memory before starting the docling conversion).
I saw that docling supports inputs of types Path, str or DocumentStream (which is basically a BytesIO object, but even this requires copying the entire file into BytesIO memory before sending it to docling?).

Can you help clarify my question in this regard? @maxmnemonic Thanks.