that.vtable_->move(buffer_, that.buffer_);
else
std::memcpy(static_cast<void*>(&buffer_), static_cast<void*>(&that.buffer_), sizeof(buffer_));
that.vtable_->move(buffer_, that.buffer_);
else
std::memcpy(static_cast<void*>(&buffer_), static_cast<void*>(&that.buffer_), sizeof(buffer_));