src/vs/workbench/browser/layoutState.ts/LayoutStateModel/getRuntimeValue
class LayoutStateModel:	getRuntimeValue<T extends StorageKeyType>(key: RuntimeStateKey<T>, readFromDisk?: boolean): T {
		if (readFromDisk) {
			const fromDiskValue = this.loadKeyFromStorage(key);
			this.stateCache.set(key.name, fromDiskValue ?? key.defaultValue);
		}

		return this.stateCache.get(key.name) as T;
	}