def get_all_symbols(self) -> Iterator[Any]:
    (yield self)
    for sChild in self._children:
        for s in sChild.get_all_symbols():
            (yield s)
def get_all_symbols(self) -> Iterator[Any]:
    (yield self)
    for sChild in self._children:
        for s in sChild.get_all_symbols():
            (yield s)