+void ConvChangePolicyTimeout(const std::string & value, STG::Optional<time_t> & res)
+{
+struct tm brokenTime;
+if (stg_strptime(value.c_str(), "%Y-%m-%d %H:%M:%S", &brokenTime) == NULL)
+ throw SGCONF::ACTION::ERROR("Credit expiration should be in format 'YYYY-MM-DD HH:MM:SS'. Got: '" + value + "'");
+res = stg_timegm(&brokenTime);
+}
+
+void ConvTraffType(const std::string & value, STG::Optional<STG::Tariff::TraffType> & res)