presto-thrift/src/main/java/io/prestosql/plugin/thrift/ThriftConnectorIndex.java/ThriftConnectorIndex/lookup
class ThriftConnectorIndex:    @Override
    public ConnectorPageSource lookup(RecordSet recordSet)
    {
        return new ThriftIndexPageSource(client, thriftHeaders, stats, indexHandle, lookupColumns, outputColumns, recordSet, maxBytesPerResponse, lookupRequestsConcurrency);
    }