@Test(expectedExceptions = NullPointerException.class) public void shouldReturnErrorWhenExchangeCurrencyIsNull() { ConversionOperators.exchange(null); }
public static MonetaryOperator exchange(CurrencyUnit currencyUnit){ return new ExchangeCurrencyOperator(Objects.requireNonNull(currencyUnit)); }
ConversionOperators { public static MonetaryOperator exchange(CurrencyUnit currencyUnit){ return new ExchangeCurrencyOperator(Objects.requireNonNull(currencyUnit)); } }
ConversionOperators { public static MonetaryOperator exchange(CurrencyUnit currencyUnit){ return new ExchangeCurrencyOperator(Objects.requireNonNull(currencyUnit)); } private  ConversionOperators(); }
ConversionOperators { public static MonetaryOperator exchange(CurrencyUnit currencyUnit){ return new ExchangeCurrencyOperator(Objects.requireNonNull(currencyUnit)); } private  ConversionOperators(); static MonetaryOperator exchange(CurrencyUnit currencyUnit); static Collector<MonetaryAmount, MonetarySummaryStatistics, MonetarySummaryStatistics> summarizingMonetary(
			CurrencyUnit currencyUnit, ExchangeRateProvider provider); }
ConversionOperators { public static MonetaryOperator exchange(CurrencyUnit currencyUnit){ return new ExchangeCurrencyOperator(Objects.requireNonNull(currencyUnit)); } private  ConversionOperators(); static MonetaryOperator exchange(CurrencyUnit currencyUnit); static Collector<MonetaryAmount, MonetarySummaryStatistics, MonetarySummaryStatistics> summarizingMonetary(
			CurrencyUnit currencyUnit, ExchangeRateProvider provider);  }