code: def get(self, name: str) -> Optional[ListEntry]:
          
          parts = name.split(self._delimiter)
          try:
              node = self._find(self._root, *parts)
          except KeyError:
              return None
          else:
              marked = self._marked.get(name)
              return ListEntry(name, node.exists, marked, bool(node.children))
docs: Return the named entry in the list tree.
  
          Args:
              name: The entry name.