public void AddNewUnits()
        {
            #region UsageRegisterUnits

            // Only units registered in the code below will be supported by the unit systems.
            // If it is desired to use the default units and add/remove additional unit, use the UnitSystem.InitializeWithDefaults method instead.
            UnitSystem.Initialize(unitRegistrar =>
            {
                // Register base unit meters.
                var meters = new Unit("m");
                unitRegistrar.Register(meters);

                // Register base unit seconds.
                var seconds = new Unit("s");
                unitRegistrar.Register(seconds);

                // Register mile as a factored unit relative to the base unit meter.
                unitRegistrar.Register(new FactoredUnit(1609.344, "mi", meters));

                // Register base unit kelvins.
                var kelvins = new Unit("K");
                unitRegistrar.Register(kelvins);

                // Register method unit fahrenheits, with conversion to and from the base unit kelvin.
                var fahrenheits = new MethodUnit(
                    fahrenheit => ((fahrenheit - 32) / 1.8) + 273.15,
                    kelvin => ((kelvin - 273.15) * 1.8) + 32,
                    "°F",
                    kelvins);
                unitRegistrar.Register(fahrenheits);

                // Register special base unit Kilograms (Prefixed base unit)
                var kilograms = new PrefixedBaseUnit(Prefixes.Kilo, "g");
                unitRegistrar.Register(kilograms);

                // Register derived unit newtons, by specifying the base unit expression.
                var newtons = new DerivedUnit("N", kilograms * meters / seconds.Exp(2));
                unitRegistrar.Register(newtons);
            });

            #endregion
        }