}
});
// A switch between 2 paths: 'single vm' and 'multiple vm'.
OptionalSwitcher<Boolean> singleVmSelectedSwitch =
scope.addOptionalSwitch(singleVmSelectedExpression);
final PreviewAndOptionPath singleVmPath =
createSingleVmPath(chooseVmPage, singleVmSelectedSwitch, nonEmptySelectedPlansValue);
final PreviewAndOptionPath multipleVmPath =
createMultipleVmPath(chooseVmPage, singleVmSelectedSwitch, nonEmptySelectedPlansValue);