src/vs/workbench/contrib/preferences/browser/preferencesRenderers.ts/UserSettingsRenderer/getSetting
class UserSettingsRenderer:	private getSetting(setting: ISetting): ISetting | undefined {
		const { key, overrideOf } = setting;
		if (overrideOf) {
			const setting = this.getSetting(overrideOf);
			for (const override of setting!.overrides!) {
				if (override.key === key) {
					return override;
				}
			}
			return undefined;
		}

		return this.preferencesModel.getPreference(key);
	}