presto-raptor-legacy/src/main/java/io/prestosql/plugin/raptor/legacy/RaptorPlugin.java/RaptorPlugin/getPluginInfo
class RaptorPlugin:    private static PluginInfo getPluginInfo()
    {
        ClassLoader classLoader = RaptorPlugin.class.getClassLoader();
        ServiceLoader<PluginInfo> loader = ServiceLoader.load(PluginInfo.class, classLoader);
        List<PluginInfo> list = ImmutableList.copyOf(loader);
        return list.isEmpty() ? new PluginInfo() : getOnlyElement(list);
    }