src/vs/editor/common/languages/languageConfigurationRegistry.ts/ComposedLanguageConfiguration/getResolvedConfiguration
class ComposedLanguageConfiguration:	public getResolvedConfiguration(): ResolvedLanguageConfiguration | null {
		if (!this._resolved) {
			const config = this._resolve();
			if (config) {
				this._resolved = new ResolvedLanguageConfiguration(
					this.languageId,
					config
				);
			}
		}
		return this._resolved;
	}