@property
    def text(self):
        msg = ("'.text' property must be implemented by all subclasses of It"
               "emPresenter")
        raise NotImplementedError(msg)
Signs a filename, storing the signature and the original file
dataset/ETHPy150Open python-openxml/opc-diag/opcdiag/presenter.py/ItemPresenter.text--crossover with--dataset/ETHPy150Open mayan-edms/mayan-edms/mayan/apps/django_gpg/api.py/GPG.sign_file