encode<V>  static method 
Implementation
static V encode<V>(
  TaxTransactionReversal instance,
  Encoder<V> encoder,
) {
  final container = encoder.container<String>();
  if (instance.originalTransaction != null) {
    container.encodeString(
      'original_transaction',
      instance.originalTransaction!,
    );
  }
  return container.value;
}