code: def export_to_tf_tensor(self, x, laid_out_x):
      
      return self.combine_slices(laid_out_x.all_slices, x.shape)
docs: Turn a Tensor into a tf.Tensor.
  
      Args:
        x: a Tensor
        laid_out_x: a LaidOutTensor
      Returns:
        a tf.Tensor