public Optional<String> tlsClientAuthority() {
        var caFile = applicationPackage.getClientSecurityFile();
        if (caFile.exists()) {
            try {
                var caPem = IOUtils.readAll(caFile.createReader());
                return Optional.of(caPem);
            } catch (FileNotFoundException e) {
                return Optional.empty();
            } catch (IOException e) {
                throw new UncheckedIOException("Failed reading certificate from application: " + caFile.getPath(), e);
            }
        } else {
            return Optional.empty();
        }
    }
The (machine learned) models imported from the models/ directory, as an unmodifiable map indexed by model name
config-model/src/main/java/com/yahoo/config/model/deploy/DeployState.java