public Rvariable Perform(Robject target, string operationName, params Rvariable[] parameters) => target.PerformAsync(operationName, parameters).WaitAndGetResult();
protected Rvariable Rvar(string name, Robject value) => new(name, value);
public Rvariable Perform(Robject target, string operationName, params Rvariable[] parameters) => target.Perform(operationName, parameters);