src/vs/platform/configuration/common/configurationModels.ts/ConfigurationInspectValue/defaultInspectValue
class ConfigurationInspectValue:	private get defaultInspectValue(): IInspectValue<V> {
		if (!this._defaultInspectValue) {
			this._defaultInspectValue = this.defaultConfiguration.inspect<V>(this.key, this.overrides.overrideIdentifier);
		}
		return this._defaultInspectValue;
	}