code: def test_core50_ni_benchmark(self):
      benchmark = CORe50(scenario="ni")
      for experience in benchmark.train_stream:
          pass
  
imports: import unittest
  from avalanche.benchmarks.classic import CORe50
  from tests.unit_tests_utils import FAST_TEST, is_github_action
label_desc: Use image node_id 1 for calling the CORe50Test obj's underlying member method code with example usage: obj.test_core50_ni_benchmark() without return types