isSubType<Super, Child> static method
Implementation
static bool isSubType<Super, Child>() =>
_TypeHelper<Child>() is _TypeHelper<Super?> ||
_TypeHelper<Child>() is _TypeHelper<Super> ||
_TypeHelper<Child>() is _TypeHelper<FutureOr<Super>> ||
_TypeHelper<Child>() is _TypeHelper<FutureOr<Super?>>;