src/vs/platform/configuration/common/configurationModels.ts/ConfigurationInspectValue/policyInspectValue
class ConfigurationInspectValue:	private get policyInspectValue(): IInspectValue<V> | null {
		if (this._policyInspectValue === undefined) {
			this._policyInspectValue = this.policyConfiguration ? this.policyConfiguration.inspect<V>(this.key) : null;
		}
		return this._policyInspectValue;
	}