Is there any standard method to reload doctags?

[nkh0472]

I noticed in document of V2 says there's a way to reload file (losslessly?).

Reload a DoclingDocument stored as JSON
You can save and reload a DoclingDocument to disk in JSON format using the following codes:

# Save to disk:
doc: DoclingDocument = conv_res.document # produced from conversion result...

with Path("./doc.json").open("w") as fp:
    fp.write(json.dumps(doc.export_to_dict())) # use `export_to_dict` to ensure consistency

# Load from disk:
with Path("./doc.json").open("r") as fp:
    doc_dict = json.loads(fp.read())
    doc = DoclingDocument.model_validate(doc_dict) # use standard pydantic API to populate doc

I want to know if there is any method to reload doctags file from export_to_doctags() to do the same thing, for further processing using Docling (eg. convert to markdown)?
(I accept no images in this case, as the doctags file cannot contain images(?) using above export function)