src/vs/workbench/browser/parts/paneCompositePart.ts/PaneCompositeParts/getPinnedPaneCompositeIds
class PaneCompositeParts:	getPinnedPaneCompositeIds(viewContainerLocation: ViewContainerLocation): string[] {
		return this.getSelectorPartByLocation(viewContainerLocation).getPinnedPaneCompositeIds();
	}