code: def testAsDimension(self):
      self.assertEqual(
          tensor_shape.Dimension(12),
          tensor_shape.as_dimension(tensor_shape.Dimension(12)),
      )
      self.assertEqual(
          tensor_shape.Dimension(12), tensor_shape.as_dimension(12)
      )
      self.assertEqual(
          tensor_shape.Dimension(None).value,
          tensor_shape.as_dimension(tensor_shape.Dimension(None)).value,
      )
      self.assertEqual(
          tensor_shape.Dimension(None).value,
          tensor_shape.as_dimension(None).value,
      )
  
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 4 for calling the DimensionTest obj's underlying member method code with example usage: obj.testAsDimension() without return types