@property
    def signature(self):
        try:
            return self._signature
        except AttributeError:
            self._signature = self.get_signature()
            return self._signature
Called when the accelerator trait is changed on an action.
dataset/ETHPy150Open novafloss/django-docusign/django_docusign/views.py/SignatureCallbackView.signature--crossover with--dataset/ETHPy150Open enthought/pyface/pyface/ui/qt4/action/action_item.py/_Tool._on_action_accelerator_changed