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() {
final buf = StringBuffer();
if (transfer != null) {
buf.write(transfer);
} else if (action != null) {
buf.write(action);
} else if (accountCreated != null) {
buf.write('Account $accountCreated Created');
} else if (accountFrozen != null) {
buf.write(accountFrozen);
} else if (documentOperations != null) {
buf.write(documentOperations);
} else {
buf.write('Unknown transaction');
}
return (buf..write('[error=$error]')).toString();
}