code: def testConvertToShapeGenericInputs(self):
      shape = mtf.convert_to_shape([])
      self.assertEqual(shape.dims, [])
      shape = mtf.convert_to_shape(None)
      self.assertEqual(shape, None)
      with self.assertRaises(ValueError):
          mtf.convert_to_shape("x;4")
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from absl.testing import parameterized
  import mesh_tensorflow
  from mesh_tensorflow import test_utils
  import numpy
  import tensorflow.compat.v1
  from tensorflow.python.framework import test_util
label_desc: Use image node_id 4 for calling the MeshTensorFlowTest obj's underlying member method code with example usage: obj.testConvertToShapeGenericInputs() without return types