def METHOD_NAME():
    ms = MySchema(a=1, b=2)
    assert ms["a"] == 1
    assert ms["b"] == 2
    assert len(ms) == 2
    assert isinstance(iter(ms), Iterator)
    assert list(ms) == ["a", "b"]
    assert isinstance(ms.keys(), KeysView)
    assert list(ms.keys()) == ["a", "b"]
    assert isinstance(ms.values(), ValuesView)
    assert list(ms.values()) == [1, 2]
    assert isinstance(ms.items(), ItemsView)
    assert list(ms.items()) == [("a", 1), ("b", 2)]
    assert ms.get("a") == 1
    assert ms.get("c") is None
    assert ms.get("c", 3) == 3
    assert "a" in ms
    assert "c" not in ms
    assert ms == ms
    assert ms != MySchema(a=1, b=2, c=3)