Method AsSigned

IntelPresentMon/CommonUtilities/log/ErrorCode.cpp:35–38

			std::optional{ std::get<uint64_t>(integral_) } : std::nullopt;
	}
	std::optional<int64_t> ErrorCode::AsSigned() const {
		return HasSigned() ?
			std::optional{ std::get<int64_t>(integral_) } : std::nullopt;
	}
	bool ErrorCode::Empty() const
	{
		return std::holds_alternative<std::monostate>(integral_);