How do I update an existing PowerPoint with new content?

from pathlib import Path
from doconda import Doconda

doconda = Doconda()  # reads the key from DOCONDA_API_KEY
file = doconda.files.upload("board.pptx")
edited = doconda.documents.create(
    operation="edit",
    file=file["id"],
    prompt="Add a slide with March sales (€48,000) after slide 3 and remove the last one",
)
Path("board-updated.pptx").write_bytes(doconda.documents.download(edited["id"], "pptx"))

import { readFile, writeFile } from "node:fs/promises"
import { Doconda } from "@doconda/sdk"

const doconda = new Doconda()
const file = await doconda.files.upload(await readFile("board.pptx"), "board.pptx")
const edited = await doconda.documents.create({
  operation: "edit",
  file: file.id,
  prompt: "Add a slide with March sales (€48,000) after slide 3 and remove the last one",
})
await writeFile("board-updated.pptx", await doconda.documents.download(edited.id, "pptx"))