code: def __delitem__(self, key):
      dict.__delitem__(self, key)
      key, prev, next = self.__map.pop(key)
      prev[2] = next
      next[1] = prev
  
file_path: catboost/contrib/python/simplejson/py2/simplejson/ordered_dict.py
imports: from UserDict import DictMixin
label_desc: Use image node_id 4 for calling the OrderedDict obj's underlying member method code with example usage: obj.__delitem__(key) without return types