from typing import Any
from typing import List


def concat_values(item1: Any, item2: Any) -> List[Any]:
    """
    Concatinate item1 and item2 into a list

    :param item1: The leading values to be concatinated.
    :param item2: The values to add to item1.
    :return: The result in list.
    """
    item1 = item1 or []
    item1 = item1 if isinstance(item1, list) else [item1]
    item2 = item2 or []
    item2 = item2 if isinstance(item2, list) else [item2]
    return item1 + item2