code: def test_nested_while(self, m, n, m_type, n_type, target):
      m = m_type(m)
      n = m_type(n)
      self.assertFunctionMatchesEager(target, m, n)
  
imports: import itertools
  from absl.testing import parameterized
  import tensorflow
  from tensorflow.python.autograph.tests import reference_test_base
label_desc: Use image node_id 5 for calling the LoopControlFlowTest obj's underlying member method code with example usage: obj.test_nested_while(m, n, m_type, n_type, target) without return types