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 (success) {
buf.writeln('Update successful!');
if (newVersion != null) {
buf.writeln('New version: $newVersion');
}
} else {
buf.writeln('Update failed.');
if (exitCode != null) {
buf.writeln('Exit code: $exitCode');
}
}
buf.writeln(message);
return buf.toString();
}