if not self.document_ids:
            raise ValueError("document_ids must be set")
        return [self._load_document_from_id(doc_id) for doc_id in self.document_ids]
    def _load_file_from_id(self, id: str) -> List[Document]:
        """Load a file from an ID."""
        from io import BytesIO
        from googleapiclient.discovery import build
        from googleapiclient.http import MediaIoBaseDownload
        creds = self._load_credentials()
        service = build("drive", "v3", credentials=creds)
        file = service.files().get(fileId=id, supportsAllDrives=True).execute()
        request = service.files().get_media(fileId=id)
        fh = BytesIO()
        downloader = MediaIoBaseDownload(fh, request)
        done = False
        while done is False:
            status, done = downloader.next_chunk()
        if self.file_loader_cls is not None:
            fh.seek(0)
            loader = self.file_loader_cls(file=fh, **self.file_loader_kwargs)
            docs = loader.load()
            for doc in docs:
                doc.metadata["source"] = f"https://drive.google.com/file/d/{id}/view"
            return docs
        else:
            from PyPDF2 import PdfReader
            content = fh.getvalue()
            pdf_reader = PdfReader(BytesIO(content))
            return [
                Document(
                    page_content=page.extract_text(),
                    metadata={
                        "source": f"https://drive.google.com/file/d/{id}/view",
                        "title": f"{file.get('name')}",
                        "page": i,
                    },
                )
                for i, page in enumerate(pdf_reader.pages)
            ]
    def _load_file_from_ids(self) -> List[Document]: