src/vs/platform/configuration/common/configurations.ts/PolicyConfiguration/onDidChangePolicies
class PolicyConfiguration:	private onDidChangePolicies(policyNames: readonly PolicyName[]): void {
		const policyConfigurations = Registry.as<IConfigurationRegistry>(Extensions.Configuration).getPolicyConfigurations();
		const keys = coalesce(policyNames.map(policyName => policyConfigurations.get(policyName)));
		this.update(keys, true);
	}