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() =>
'RecurrenceRule(${frequency.token}, interval: $interval, '
'count: ${count ?? 'none'}, until: ${until ?? 'none'}, '
'byWeekDays: $byWeekDays, byMonthDays: $byMonthDays, '
'byMonths: $byMonths, weekStart: ${weekStart.code})';