import java.util.concurrent.ThreadFactory;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
-import javassist.ClassPool;
import org.apache.commons.lang3.StringUtils;
-import org.opendaylight.yangtools.sal.binding.generator.util.JavassistUtils;
+import org.opendaylight.mdsal.binding.generator.util.JavassistUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
+import javassist.ClassPool;
public class SingletonHolder {
private static final Logger logger = LoggerFactory.getLogger(SingletonHolder.class);