def METHOD_NAME(self):
    # Arrange
    bsp = BetfairStartingPrice.from_dict(
        {
            "type": "BetfairStartingPrice",
            "instrument_id": self.instrument.id.value,
            "bsp": 1.20,
            "ts_event": 1635313844283000000,
            "ts_init": 1635313844283000000,
        },
    )
    # Act
    values = bsp.to_dict()
    result = bsp.from_dict(values)
    # Assert
    assert values["type"] == "BetfairStartingPrice"
    assert result.bsp == bsp.bsp