code: def reset_work_pieces(self):
      self.work_pieces = work_data.WorkPiecesBase(
          self.datastore_client, TEST_WORK_TYPE_ENTITY_ID
      )
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import copy
  import unittest
  from six import assertCountEqual
  from six import itervalues
  from eval_lib import work_data
  from eval_lib.tests import fake_cloud_client
label_desc: Use image node_id 2 for calling the WorkPiecesBaseTest obj's underlying member method code with example usage: obj.reset_work_pieces() without return types