src/vs/workbench/services/configuration/electron-sandbox/configurationCache.ts/ConfigurationCache/getCachedConfiguration
class ConfigurationCache:	private getCachedConfiguration({ type, key }: ConfigurationKey): CachedConfiguration {
		const k = `${type}:${key}`;
		let cachedConfiguration = this.cachedConfigurations.get(k);
		if (!cachedConfiguration) {
			cachedConfiguration = new CachedConfiguration({ type, key }, this.cacheHome, this.fileService);
			this.cachedConfigurations.set(k, cachedConfiguration);
		}
		return cachedConfiguration;
	}