code: def testSupertypeOfUnrelatedTypes(self):
      type_1 = tensor_shape.TensorShape([1, 2, 4])
      type_2 = tensor_shape.TensorShape([None, 2, 3])
      self.assertEqual(
          type_1.most_specific_common_supertype([type_2]),
          tensor_shape.TensorShape([None, 2, None]),
      )
      self.assertEqual(
          type_2.most_specific_common_supertype([type_1]),
          tensor_shape.TensorShape([None, 2, None]),
      )
  
imports: from absl.testing import parameterized
  from tensorflow.core.framework import tensor_shape_pb2
  from tensorflow.core.function import trace_type
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import tensor_shape
  from tensorflow.python.framework import test_util
  from tensorflow.python.platform import googletest
label_desc: Use image node_id 8 for calling the TraceTypeTest obj's underlying member method code with example usage: obj.testSupertypeOfUnrelatedTypes() without return types