def METHOD_NAME(
    self, list_of_instrument_strategies: listOfInstrumentStrategies
) -> listOfOptimalPositionsAcrossInstrumentStrategies:
    list_of_optimal_positions_and_instrument_strategies = [
        self.get_instrument_strategy_and_optimal_position(instrument_strategy)
        for instrument_strategy in list_of_instrument_strategies
    ]
    list_of_optimal_positions_and_instrument_strategies = (
        listOfOptimalPositionsAcrossInstrumentStrategies(
            list_of_optimal_positions_and_instrument_strategies
        )
    )
    return list_of_optimal_positions_and_instrument_strategies