class_docstr: Dictionary wrapper that updates an arguments instance on any item set in the dictionary 
class_docstr_tok: ["Dictionary","wrapper","that","updates","an","arguments","instance","on","any","item","set","in","the","dictionary"]
code: def _set_callback(self, *_):
      if self._update_func:
          self._update_func(self._update_obj, self)
  
imports: import itertools
  import json
  from copy import copy
  from logging import getLogger
  import six
  import yaml
label_desc: Use image node_id 4 for calling the ProxyDictPostWrite obj's underlying member method code with example usage: obj._set_callback() without return types