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() {
if (errors.isEmpty) {
return message;
}
final errorText = errors.map((error) => error.message).join('; ');
if (message.isEmpty) {
return errorText;
}
return '$message: $errorText';
}