class BaseFragment(type):
    __fragment__: str
    __lexicon__: str

    def __repr__(self):
        if self.__fragment__ == "main":
            return self.__lexicon__
        return f"{self.__lexicon__}#{self.__fragment__}"


class BaseExport:
    __lexicon__: str

    # def __init__(self):
    #     raise TypeError("Cannot instantiate export")

    def __repr__(self):
        return f"<fragment collection of lexicon '{self.__lexicon__}'>"