Read-only property.

        :return: A ``pathlib.PurePath`` object or ``None``.

def infile_path(self) -> Optional[PurePath]:
        """
        Read-only property.

        :return: A ``pathlib.PurePath`` object or ``None``.
        """
        if not self.__infile_path:
            return Path(self.__infile_path).expanduser()
        return None