code: def add_node(self, node):
      self.nodes.append(node)
      self.name_map[node.name] = node
  
imports: import numpy
  import tensorflow
  import lucid.modelzoo.vision_models
  import lucid.optvis.objectives
  import lucid.optvis.param
  import lucid.optvis.render
  from lucid.misc.io import show, load
  from lucid.misc.io.showing import _image_url, _display_html
  from collections import defaultdict
label_desc: Use image node_id 2 for calling the Graph obj's underlying member method code with example usage: obj.add_node(node) without return types