src/vs/workbench/browser/parts/views/viewsViewlet.ts/FilterViewPaneContainer/addConstantViewDescriptors
class FilterViewPaneContainer:	protected addConstantViewDescriptors(constantViewDescriptors: IViewDescriptor[]) {
		constantViewDescriptors.forEach(viewDescriptor => this.constantViewDescriptors.set(viewDescriptor.id, viewDescriptor));
	}