Function Clear

test-app/runtime/src/main/cpp/include/cppgc/persistent.h:197–205

  }

  void Clear() {
    // Simplified version of `Assign()` to allow calling without a complete type
    // `T`.
    if (IsValid()) {
      WeaknessPolicy::GetPersistentRegion(GetValue()).FreeNode(GetNode());
      SetNode(nullptr);
    }
    SetValue(nullptr);
  }

  T* Release() {
    T* result = Get();