type Init = enumeration(none "No initialization", amount "Prescribed amount", amountSS "Steady-state amount", density "Prescribed density", densitySS "Steady-state density", volume "Prescribed volume", volumeSS "Steady-state volume", pressure "Prescribed pressure", pressureSS "Steady-state pressure", temperature "Prescribed temperature", temperatureSS "Steady-state temperature", specificEnthalpy "Prescribed specific enthalpy", specificEnthalpySS "Steady-state specific enthalpy", Gibbs "Prescribed Gibbs potential", GibbsSS "Steady-state Gibbs potential");