isCzechBankAccount function
Implementation
bool isCzechBankAccount(final String bankAccountNumber, {withBankCode = true}) {
final account = CzechBankAccount.fromString(bankAccountNumber);
if (account.accountNumber == null) return false;
if (withBankCode) {
if (account.bankCode == null) return false;
} else {
if (account.bankCode != null) return false;
}
return true;
}