code: def test_mp_normal_dynb(self):
      self._run_mp(
          task="integration_tests:chunky",
          batchsize=2,
          dynamic_batching="full",
      )
  
imports: from unittest import TestCase
  import os
  import parlai.utils.testing
  from parlai.tasks.integration_tests.agents import NUM_TEST
  import parlai.scripts.multiprocessing_train
label_desc: Use image node_id 7 for calling the TestNumExamples obj's underlying member method code with example usage: obj.test_mp_normal_dynb() without return types