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

class A extends core::Object {
  field dynamic x;
  synthetic constructor •() → self::A
    ;
}
class B extends core::Object implements self::A {
  field dynamic x;
  synthetic constructor •() → self::B
    ;
}
static method foo() → dynamic
  ;
static method main() → dynamic
  ;