class_docstr: Describes a tf.Tensor.
  
  Metadata for describing the `tf.Tensor` objects accepted or returned
  by some TensorFlow APIs.
code: def __reduce__(self):
      return TensorSpec, (self._shape, self._dtype, self._name)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import numpy
  from tensorflow.python.framework import common_shapes
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import tensor_shape
label_desc: Use image node_id 12 for calling the TensorSpec obj's underlying member method code with example usage: obj.__reduce__() and returns: TensorSpec,  self,  self,  self