src/vs/workbench/contrib/preferences/browser/preferencesRenderers.ts/DefaultSettingsRenderer/getPreference
class DefaultSettingsRenderer:	private getPreference(key: string, settingsGroups: ISettingsGroup[]): ISetting | undefined {
		for (const group of settingsGroups) {
			for (const section of group.sections) {
				for (const setting of section.settings) {
					if (setting.key === key) {
						return setting;
					}
				}
			}
		}
		return undefined;
	}