presto-atop/src/main/java/io/prestosql/plugin/atop/AtopPlugin.java/AtopPlugin/getConnectorFactories
class AtopPlugin:    @Override
    public Iterable<ConnectorFactory> getConnectorFactories()
    {
        return ImmutableList.of(new AtopConnectorFactory(AtopProcessFactory.class, AtopPlugin.class.getClassLoader()));
    }