def METHOD_NAME(self, parent_id: str) -> GoogleDriveFileList:
    """List files in a Google Drive folder.
    Parameters
    ----------
    parent_id : str
        Google Drive folder ID.
    Returns
    -------
    List
        Files
    """
    request = f"'{parent_id}' in parents and trashed=false"
    # Get list of files
    files = self.drive.ListFile({"q": request}).GetList()
    return files