code: def test_nested_for_loops_dense(self, m, type_):
      m = type_(m)
      self.assertFunctionMatchesEager(nested_for_loops, m)
  
imports: import functools
  import itertools
  from absl.testing import parameterized
  import tensorflow
  from tensorflow.python.autograph.tests import reference_test_base
label_desc: Use image node_id 20 for calling the ReferenceTest obj's underlying member method code with example usage: obj.test_nested_for_loops_dense(m, type_) without return types