presto-main/src/main/java/io/prestosql/operator/TableWriterOperator.java/TableWriterOperatorFactory/createOperator
class TableWriterOperatorFactory:        @Override
        public Operator createOperator(DriverContext driverContext)
        {
            checkState(!closed, "Factory is already closed");
            OperatorContext context = driverContext.addOperatorContext(operatorId, planNodeId, TableWriterOperator.class.getSimpleName());
            Operator statisticsAggregationOperator = statisticsAggregationOperatorFactory.createOperator(driverContext);
            boolean statisticsCpuTimerEnabled = !(statisticsAggregationOperator instanceof DevNullOperator) && isStatisticsCpuTimerEnabled(session);
            return new TableWriterOperator(context, createPageSink(), columnChannels, statisticsAggregationOperator, types, statisticsCpuTimerEnabled);
        }