library /*isNonNullableByDefault*/;
import self as self;

import "dart:async";

static method h1<T extends FutureOr<self::h1::T?>? = FutureOr<dynamic>?>(self::h1::T? t) → void {}
static method h2<S extends FutureOr<self::h2::S?> = FutureOr<dynamic>>(self::h2::S? s) → void {}
static method main() → dynamic {}