presto-cassandra/src/main/java/io/prestosql/plugin/cassandra/CassandraPageSink.java/CassandraPageSink/appendPage
class CassandraPageSink:    @Override
    public CompletableFuture<?> appendPage(Page page)
    {
        for (int position = 0; position < page.getPositionCount(); position++) {
            List<Object> values = new ArrayList<>(columnTypes.size() + 1);
            if (generateUUID) {
                values.add(UUID.randomUUID());
            }

            for (int channel = 0; channel < page.getChannelCount(); channel++) {
                appendColumn(values, page, position, channel);
            }

            cassandraSession.execute(insert.bind(values.toArray()));
        }
        return NOT_BLOCKED;
    }