enum class version# enum class fitoria::http::version : std::uint8_t# Defines HTTP version constants. Values: enumerator unknown# enumerator v0_9# HTTP/0.9 enumerator v1_0# HTTP/1.0 enumerator v1_1# HTTP/1.1 enumerator v2_0# HTTP/2.0 enumerator v3_0# HTTP/3.0 inline auto fitoria::http::to_string(version ver) -> std::string# Convert version into string.