class FNiagaraUserParameterPanelViewModel : public [TSharedFromThis< FNiagaraUserParameterPanelViewModel >](API\Runtime\Core\Templates\TSharedFromThis), public [TNiagaraViewModelManager< UNiagaraSystem, FNiagaraUserParameterPanelViewModel >](API\Plugins\NiagaraEditor\ViewModels\TNiagaraViewModelManager)