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() {
return 'PreloadExecutionResult('
'result: $result, '
'completed: $completedTasks/$totalTasks, '
'successRate: ${(successRate * 100).toStringAsFixed(1)}%, '
'time: ${executionTime.inMilliseconds}ms)';
}