src/vs/workbench/contrib/files/browser/explorerViewlet.ts/ExplorerViewletViewsContribution/updateOpenEditorsVisibility
class ExplorerViewletViewsContribution:	private updateOpenEditorsVisibility(): void {
		this.openEditorsVisibleContextKey.set(this.workspaceContextService.getWorkbenchState() === WorkbenchState.EMPTY || this.configurationService.getValue('explorer.openEditors.visible') !== 0);
	}