presto-base-jdbc/src/main/java/io/prestosql/plugin/jdbc/JdbcPlugin.java/JdbcPlugin/getConnectorFactories
class JdbcPlugin:    @Override
    public Iterable<ConnectorFactory> getConnectorFactories()
    {
        return ImmutableList.of(new JdbcConnectorFactory(name, module, JdbcPlugin.class.getClassLoader()));
    }