// CHECK:
//   Mangled name: C
//   Public signature: /C|null[0]
class C : I {
  // CHECK:
  //   Mangled name: C#<init>(J){}
  //   Public signature: /C.<init>|1083383516528472352[0]
  //   Public signature debug description: <init>(J){}
  constructor(client: J) /* primary */

}