fromString static method
Creates a PaymentMethodTypes instance from its string representation.
Throws an UnimplementedError if the provided method is not supported.
Implementation
static PaymentMethodTypes fromString(String method) {
return PaymentMethodTypes.values.firstWhere(
(value) => value.toStr == method,
orElse: () =>
throw UnimplementedError('This payment method is not supported'),
);
}