def complete(self, text: str) -> Iterable[str]:
        """Return an iterable of possible completions for the given text in
        this namespace."""
        assert not text.startswith(":")

        if "/" in text:
            prefix, suffix = text.split("/", maxsplit=1)
            results = itertools.chain(
                self.__complete_alias(prefix, name_in_ns=suffix),
                self.__complete_imports_and_aliases(prefix, name_in_module=suffix),
            )
        else:
            results = itertools.chain(
                self.__complete_alias(text),
                self.__complete_imports_and_aliases(text),
                self.__complete_interns(text),
                self.__complete_refers(text),
            )

        return results
Return an iterable of possible completions for the given text in
        this namespace.