presto-base-jdbc/src/main/java/io/prestosql/plugin/jdbc/ForwardingJdbcClient.java/ForwardingJdbcClient/getSplits
class ForwardingJdbcClient:    @Override
    public ConnectorSplitSource getSplits(JdbcIdentity identity, JdbcTableHandle layoutHandle)
    {
        return getDelegate().getSplits(identity, layoutHandle);
    }