private void registerUserConfiguredFiles(DeployState deployState) {
        if (containers.isEmpty()) return;

        // Files referenced from user configs to all components.
        UserConfiguredFiles files = new UserConfiguredFiles(deployState.getFileRegistry(),
                                                            deployState.getDeployLogger(),
                                                            deployState.featureFlags(),
                                                            userConfiguredUrls,
                                                            deployState.getApplicationPackage());
        for (Component<?, ?> component : getAllComponents()) {
            files.register(component);
        }
    }
The heap size % of total memory available to the JVM process.
config-model/src/main/java/com/yahoo/vespa/model/container/ApplicationContainerCluster.java