src/vs/workbench/contrib/languageStatus/browser/languageStatus.contribution.ts/EditorStatusContribution/_storeState
class EditorStatusContribution:	private _storeState(): void {
		if (this._dedicated.size === 0) {
			this._storageService.remove(EditorStatusContribution._keyDedicatedItems, StorageScope.GLOBAL);
		} else {
			const raw = JSON.stringify(Array.from(this._dedicated.keys()));
			this._storageService.store(EditorStatusContribution._keyDedicatedItems, raw, StorageScope.GLOBAL, StorageTarget.USER);
		}
	}