from typing import Optional
from typing import List


def parse_v1_xlets(xlet: dict) -> Optional[List[str]]:
    """
    Parse airflow xlets for V1
    :param xlet: airflow v1 xlet dict
    :return: table list or None
    """
    if isinstance(xlet, dict):
        tables = xlet.get("tables")
        if tables and isinstance(tables, list):
            return tables

    return None