setDefaultWallet method
Set the default wallet to use by common operations
Implementation
void setDefaultWallet(String walletId) {
if (_wallets.any((wallet) => wallet.id == walletId)) {
_repository.setDefaultWalletForReceiving(walletId);
_repository.setDefaultWalletForSending(walletId);
} else {
throw ArgumentError('Wallet with id $walletId does not exist.');
}
}