code: def initialize_root(self):
      self.value = None
      self.recipe = (lambda x: x, (), {}, [])
  
file_path: autograd/autograd/misc/tracers.py
imports: from itertools import repeat
  from autograd.wrap_util import wraps
  from autograd.util import subvals, toposort
  from autograd.tracer import trace, Node
  from functools import partial
label_desc: Use image node_id 2 for calling the FullGraphNode obj's underlying member method code with example usage: obj.initialize_root() without return types