presto-mongodb/src/main/java/io/prestosql/plugin/mongodb/MongoPageSinkProvider.java/MongoPageSinkProvider/createPageSink
class MongoPageSinkProvider:    @Override
    public ConnectorPageSink createPageSink(ConnectorTransactionHandle transactionHandle, ConnectorSession session, ConnectorInsertTableHandle insertTableHandle)
    {
        MongoInsertTableHandle handle = (MongoInsertTableHandle) insertTableHandle;
        return new MongoPageSink(config, mongoSession, session, handle.getSchemaTableName(), handle.getColumns());
    }