attachments.append(href)
        return attachments
    def _download_attachments(self, attachments: List[str]) -> None:
        """Download all attachments.
        Args:
            attachments: List of attachments.
        """
        # Make sure the folder exists
        Path(self.folder_path).mkdir(parents=True, exist_ok=True)
        # Download all attachments
        for attachment in attachments:
            self.download(attachment)
    def _load_documents(self) -> List[Document]:
        """Load all documents in the folder.
        Returns:
            List of documents.
        """
        # Create the document loader
        loader = DirectoryLoader(
            path=self.folder_path, glob="*.pdf", loader_cls=PyPDFLoader  # type: ignore
        )
        # Load the documents
        documents = loader.load()
        # Return all documents
        return documents
    def _get_paths(self, soup: Any) -> List[str]:
        """Get all relative paths in the navbar."""
        relative_paths = []
        course_menu = soup.find("ul", {"class": "courseMenu"})
        if course_menu is None:
            raise ValueError("No course menu found.")
        for link in course_menu.find_all("a"):
            href = link.get("href")
            if href is not None and href.startswith("/"):
                relative_paths.append(href)
        return relative_paths
[docs]    def download(self, path: str) -> None:
        """Download a file from an url.
        Args:
            path: Path to the file.
        """
        # Get the file content
        response = self.session.get(self.base_url + path, allow_redirects=True)
        # Get the filename
        filename = self.parse_filename(response.url)
        # Write the file to disk