pylabrobot.li_cor.odyssey.OdysseyClassic.get_preview# async OdysseyClassic.get_preview(group: str, scan_name: str, contrast_700: int = 5, contrast_800: int = 5, channels: str = '700 800', background: str = 'black') → bytes# Fetch a JPEG preview rendered by the instrument. Parameters: group (str) scan_name (str) contrast_700 (int) contrast_800 (int) channels (str) background (str) Return type: bytes