src/vs/workbench/api/browser/mainThreadStorage.ts/MainThreadStorage/$getValue
class MainThreadStorage:	$getValue<T>(shared: boolean, key: string): Promise<T | undefined> {
		if (shared) {
			this._sharedStorageKeysToWatch.set(key, true);
		}
		try {
			return Promise.resolve(this._getValue<T>(shared, key));
		} catch (error) {
			return Promise.reject(error);
		}
	}