langchain/document_loaders/slack_directory.py/SlackDirectoryLoader/__init__
class SlackDirectoryLoader:    def __init__(self, zip_path: str, workspace_url: Optional[str] = None):
        """Initialize the SlackDirectoryLoader.

        Args:
            zip_path (str): The path to the Slack directory dump zip file.
            workspace_url (Optional[str]): The Slack workspace URL.
              Including the URL will turn
              sources into links. Defaults to None.
        """
        self.zip_path = Path(zip_path)
        self.workspace_url = workspace_url
        self.channel_id_map = self._get_channel_id_map(self.zip_path)