library /*isNonNullableByDefault*/;
import self as self;
import "dart:core" as core;

class A extends core::Object {
  field core::int? a = null;
  constructor •(core::int? a) → self::A
    : super core::Object::•() {
    this.{self::A::a} = a;
  }
}
static method main() → dynamic {}