const tsl::string& name,
                           absl::AnyInvocable<void()> fn) override {
    return nullptr;
  }

  bool GetCurrentThreadName(tsl::string* name) override { return false; }

  void SchedClosure(absl::AnyInvocable<void()> closure) override {}

  void SchedClosureAfter(int64_t micros,