toString method
A string representation of this object.
Some classes have a default textual representation,
often paired with a static parse function (like int.parse).
These classes will provide the textual representation as
their string representation.
Other classes have no meaningful textual representation
that a program will care about.
Such classes will typically override toString to provide
useful information when inspecting the object,
mainly for debugging or logging.
Implementation
@override
String toString() => 'TransactionResult(status=${status.wire}, '
'amount=$amountMinorUnits $currency, idem=$requestIdempotencyKey, '
'tx=$transactionId, entry=${entryMode.wire}'
'${error != null ? ", error=${error!.code.wire}" : ""})';