src/vs/workbench/browser/parts/views/viewsViewlet.ts/FilterViewPaneContainer/getViewsNotForTarget
class FilterViewPaneContainer:	private getViewsNotForTarget(target: string[]): IViewDescriptor[] {
		const iterable = this.allViews.keys();
		let key = iterable.next();
		let views: IViewDescriptor[] = [];
		while (!key.done) {
			let isForTarget: boolean = false;
			target.forEach(value => {
				if (key.value === value) {
					isForTarget = true;
				}
			});
			if (!isForTarget) {
				views = views.concat(this.getViewsForTarget([key.value]));
			}

			key = iterable.next();
		}
		return views;
	}