src/vs/workbench/contrib/languageStatus/browser/languageStatus.contribution.ts/EditorStatusContribution/_restoreState
class EditorStatusContribution:	private _restoreState(): void {
		const raw = this._storageService.get(EditorStatusContribution._keyDedicatedItems, StorageScope.PROFILE, '[]');
		try {
			const ids = <string[]>JSON.parse(raw);
			this._dedicated = new Set(ids);
		} catch {
			this._dedicated.clear();
		}
	}