filterMap<Z> method
Implementation
@override
Option<Z> filterMap<Z>(Option<Z> Function(T t) f) => f(_value).match(
() => const Option.none(),
Some.new,
);
@override
Option<Z> filterMap<Z>(Option<Z> Function(T t) f) => f(_value).match(
() => const Option.none(),
Some.new,
);