Method Swap

tensorflow/core/framework/variant.h:347–351

    }

    void Swap(ValueInterface* memory) override {
      CHECK(TypeId() == memory->TypeId())
          << TypeId().name() << " vs. " << memory->TypeId().name();
      std::swap(value, static_cast<Value*>(memory)->value);
    }

    string TypeName() const override { return TypeNameVariant(value); }