FontFeature.stylisticSet constructor
Select a stylistic set.
Fonts may have up to 20 stylistic sets, numbered 1 through 20.
See also:
Implementation
factory FontFeature.stylisticSet(int value) {
assert(value >= 1);
assert(value <= 20);
return FontFeature('ss${value.toString().padLeft(2, "0")}');
}