def METHOD_NAME():
    """
    `Headers.get_list` should support both split_commas=False and split_commas=True.
    """
    h = httpx.Headers([("set-cookie", "a, b"), ("set-cookie", "c")])
    assert h.get_list("Set-Cookie") == ["a, b", "c"]
    h = httpx.Headers([("vary", "a, b"), ("vary", "c")])
    assert h.get_list("Vary", split_commas=True) == ["a", "b", "c"]