src/vs/editor/common/languages/languageConfigurationRegistry.ts/ResolvedLanguageConfiguration/brackets
class ResolvedLanguageConfiguration:	public get brackets(): RichEditBrackets | null {
		if (!this._brackets && this.underlyingConfig.brackets) {
			this._brackets = new RichEditBrackets(
				this.languageId,
				this.underlyingConfig.brackets
			);
		}
		return this._brackets;
	}