presto-plugin-toolkit/src/main/java/io/prestosql/plugin/base/jmx/RebindSafeMBeanServer.java/RebindSafeMBeanServer/getClassLoader
class RebindSafeMBeanServer:    @Override
    public ClassLoader getClassLoader(ObjectName loaderName)
            throws InstanceNotFoundException
    {
        return mbeanServer.getClassLoader(loaderName);
    }