class_docstr: Vanilla Gradient Descent TensorOptimizer.
code: def init_state(self, x):
      return {}
  
imports: import warnings
  import numpy
  from six.moves import xrange
  import tensorflow
  import tensorflow_addons
  from cleverhans.attacks.attack import Attack
  from cleverhans.compat import reduce_mean, reduce_sum, reduce_max
  from cleverhans.model import Model
  from cleverhans import utils_tf
label_desc: Use image node_id 2 for calling the TensorGradientDescent obj's underlying member method code with example usage: obj.init_state(x) and returns: dict