FMultiValueNotifier<T> constructor
Creates a FMultiValueNotifier with a min and max number of elements allowed. Defaults to no min and max.
Contract:
min and max must be: 0 <= min <= max.
Implementation
FMultiValueNotifier({Set<T> value = const {}, int min = 0, int? max})
: _min = min,
_max = max,
assert(debugCheckInclusiveRange<FMultiValueNotifier<T>>(min, max)),
super(value);