public CloudAccount cloudAccount(CloudName cloud, InstanceName instance, ZoneId zone) {
        return (zone.environment().isManuallyDeployed() ? devSpec.cloudAccounts
                                                        : instance(instance).map(spec -> spec.cloudAccounts(zone.environment(), zone.region())))
                .orElse(cloudAccounts)
                .getOrDefault(cloud, CloudAccount.empty);
    }
The most specific Cloud account for the given arguments.
config-model-api/src/main/java/com/yahoo/config/application/api/DeploymentSpec.java