def METHOD_NAME():
    """
    Test that this function returns the type of List[T], or None if it's not a nested type
    """
    assert _extract_nested_type("List[str]") == List[str]
    assert _extract_nested_type("list(str)") == List[str]
    assert _extract_nested_type("List(SampleInputType)") == List[SampleInputType]
    assert _extract_nested_type("int") == None