/**
 * Verifies that the given "remote project ref" properties exist in {@code gradle.properties}.
 *
 * Usage (Java 11+ single-file source execution):
 *   java .teamcity/scripts/CheckRemoteProjectRef.java <propertyKey1> <propertyKey2> ...
 *
 * The check currently enforces:
 * - Each requested key exists in {@code gradle.properties}
 * - Its value is non-empty
 */
public class CheckRemoteProjectRef {

            private String getFromCache(final String propertyKey) {
                try {
                    return cache.get(propertyKey, () -> {
                        final String value = System.getProperty(Constants.FESS_CONFIG_PREFIX + propertyKey, super.get(propertyKey));
                        if (value == null) {
                            throw new KeyNotFoundException(propertyKey);
                        }