DiscoClient client = new DiscoClient();
        
        Distribution distribution = client.getDistributions()
                .stream()
                .filter(d -> d.getName().equalsIgnoreCase("zulu"))
                .findFirst()
                .get();
        
        System.out.println("dist: "+distribution);
        
        List<Pkg> pkgs = client.getPkgs(
                List.of(distribution),
                VersionNumber.fromText("21"),
                Latest.NONE,
                OperatingSystem.LINUX,
                LibCType.NONE,
                Architecture.NONE,
                Bitness.NONE,
                ArchiveType.NONE,
                PackageType.JDK,
                Boolean.FALSE,
                Boolean.TRUE,
                List.of(ReleaseStatus.GA, ReleaseStatus.EA),
                TermOfSupport.LTS,
                List.of(Scope.PUBLIC),
                null
        );
        
        for (Pkg pkg : pkgs) {
            System.out.println("pkg: "+pkg);
            
            // on 21.0.1 and 2.0.39: Exception in thread "main" java.lang.NullPointerException: Cannot invoke "com.google.gson.JsonArray.size()" because "jsonArray" is null
            // on 2.0.24: Exception in thread "main" java.lang.IllegalArgumentException: ephemeralId or javaVersion cannot be null
            System.out.println("info: "+client.getPkgInfoByEphemeralId(pkg.getEphemeralId(), pkg.getJavaVersion()));
        }