def _add_dependencies(self, key: Key, value: Optional[Key] = None) -> None:
if value is None:
value = key
else:
self.dependencies.setdefault(key, set()).add(value)
for elt in subkeys(key):
self._add_dependencies(elt, value)
def _add_dependencies(self, key: Key, value: Optional[Key] = None) -> None:
if value is None:
value = key
else:
self.dependencies.setdefault(key, set()).add(value)
for elt in subkeys(key):
self._add_dependencies(elt, value)