presto-base-jdbc/src/main/java/io/prestosql/plugin/jdbc/ForwardingJdbcClient.java/ForwardingJdbcClient/getConnection
class ForwardingJdbcClient:    @Override
    public Connection getConnection(JdbcIdentity identity, JdbcSplit split)
            throws SQLException
    {
        return getDelegate().getConnection(identity, split);
    }