from typing import Any
from typing import List


def to_list(obj: Any) -> List[Any]:
    """Convert objective to list of object.

    Args:
        obj (Any): Object need to be convert.

    Returns:
        List[Any]:
            If `obj` already is a list object, return `obj` itself,
            otherwise wrap `obj` with a list and return it.
    """
    if isinstance(obj, list):
        return obj
    else:
        return [obj]