src/vs/platform/configuration/common/configurationModels.ts/Configuration/compareAndUpdateRemoteUserConfiguration
class Configuration:	compareAndUpdateRemoteUserConfiguration(user: ConfigurationModel): IConfigurationChange {
		const { added, updated, removed, overrides } = compare(this.remoteUserConfiguration, user);
		let keys = [...added, ...updated, ...removed];
		if (keys.length) {
			this.updateRemoteUserConfiguration(user);
		}
		return { keys, overrides };
	}