code: def _set(self, **kwargs):
      for k, v in iteritems(kwargs):
          if getattr(self, k) is _unset:
              setattr(self, k, v)
  
imports: from collections import defaultdict, deque
  import itertools
  import pprint
  import textwrap
  import attr
  from jsonschema import _utils
  from jsonschema.compat import PY3, iteritems
label_desc: Use image node_id 7 for calling the _Error obj's underlying member method code with example usage: obj._set() without return types