docstr: See base class.
docstr_tok: ["See","base","class","."]
code: def default_input(self):
      """See base class."""
      return tf.random.normal([3, 12])
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import itertools
  from absl.testing import parameterized
  import numpy
  import tensorflow
  from tensorflow_model_optimization.python.core.internal.tensor_encoding.stages.research import kashin
  from tensorflow_model_optimization.python.core.internal.tensor_encoding.testing import test_utils
label_desc: Use image node_id 2 for calling the KashinHadamardEncodingStageTest obj's underlying member method code with example usage: obj.default_input() and returns: tf