src/vs/workbench/contrib/welcomeOverlay/browser/welcomeOverlay.ts/WelcomeOverlay/constructor
class WelcomeOverlay:	constructor(
		@ILayoutService private readonly layoutService: ILayoutService,
		@IEditorService private readonly editorService: IEditorService,
		@ICommandService private readonly commandService: ICommandService,
		@IContextKeyService private readonly _contextKeyService: IContextKeyService,
		@IKeybindingService private readonly keybindingService: IKeybindingService
	) {
		super();
		this._overlayVisible = OVERLAY_VISIBLE.bindTo(this._contextKeyService);
		this.create();
	}