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

class A extends core::Object {
  constructor •(core::num a) → self::A
    ;
}
class B extends self::A {
  constructor sub1(core::int a1) → self::B
    ;
  constructor sub2(core::double a2) → self::B
    ;
}
static method main() → dynamic
  ;