byNumeric method Null safety

PaylikeCurrency byNumeric(
  1. int numeric
)

Implementation

PaylikeCurrency byNumeric(int numeric) {
  var element = PaylikeCurrencyCollection.currencies.entries.firstWhere(
      (element) => element.value.numeric == numeric,
      orElse: () => throw MissingCurrency.fromNumeric(numeric));
  return element.value;
}