code: def walk(self, node):
      self.initialize(node)
      value = self.visit(node)
      self.finalize()
      return value
  
imports: from contextlib import contextmanager
  from parso._compatibility import use_metaclass
label_desc: Use image node_id 3 for calling the Normalizer obj's underlying member method code with example usage: obj.walk(node) and returns: value