class_docstr: Non-root node of the summary data structure.
  
  Contains a path to itself from the root.
class_docstr_tok: ["Non-root","node","of","the","summary","data","structure",".","Contains","a","path","to","itself","from","the","root","."]
code: def _update(self, record: SummaryRecord):
      return self._parent._update(
          record._add_next_parent(self._parent_key)
      )
  
imports: import abc
  import typing
  from .interface.summary_record import SummaryItem, SummaryRecord
label_desc: Use image node_id 3 for calling the SummarySubDict obj's underlying member method code with example usage: obj._update(record) and returns: self