code: def visitDefault(self, node):
      self.ast_nodenames.add(type(node).__name__)
  
      for child in self.children(node):
          self.visit(child)
  
file_path: turicreate/src/python/turicreate/meta/asttools/tests/__init__.py
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import unittest
  import ast
  import inspect
  from ...asttools import Visitor, cmp_ast, str_ast
  from ...asttools.visitors.graph_visitor import GraphGen
label_desc: Use image node_id 2 for calling the NodeRecorder obj's underlying member method code with example usage: obj.visitDefault(node) without return types