ExpansionRow

constructor(
	row: T, 
	component: Signal<TemplateRef<any> | undefined> | Type<ExpansionRowRenderer<T>>, 
	column: PropertyColumn<T>, 
	closeCallback: (row: T) => void, 
	expanded?: WritableSignal<boolean> | undefined
): ExpansionRow<T>;

close(): void;

isTemplateRef(): boolean;