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 output = StringBuffer('$major.$minor.$patch');
if (_preRelease.isNotEmpty) {
output.write("-${_preRelease.join('.')}");
}
if (build.trim().isNotEmpty) {
output.write('+${build.trim()}');
}
return output.toString();
}