async def METHOD_NAME(client):
    with pytest.raises(ValueError):
        await client.explicit.post_required_string_header(header_parameter=None)
    with pytest.raises(HttpResponseError) as ex:
        await client.explicit.post_required_string_parameter(None)
    assert "Not Found" in str(ex.value)
    with pytest.raises(HttpResponseError) as ex:
        await client.explicit.post_required_string_property(None)
    assert "Not Found" in str(ex.value)