code: def merge(self, accumulator, accumulators):
      for other_acc in accumulators:
          accumulator[0] += other_acc[0]
          accumulator[1] += other_acc[1]
  
imports: import unittest
  from pandas.testing import assert_frame_equal
  from pyflink.common import Row
  from pyflink.table import expressions, ListView
  from pyflink.table.types import DataTypes
  from pyflink.table.udf import udf, udtf, udaf, AggregateFunction, TableAggregateFunction, udtaf
  from pyflink.testing import source_sink_utils
  from pyflink.testing.test_case_utils import PyFlinkBatchTableTestCase, PyFlinkStreamTableTestCase
label_desc: Use image node_id 5 for calling the CountAndSumAggregateFunction obj's underlying member method code with example usage: obj.merge(accumulator, accumulators) without return types