def cancel_pressed(self):
        self.notes.reset_changes()
        self.close()
Update cached volume usage for a volume
dataset/ETHPy150Open VisTrails/VisTrails/vistrails/gui/version_prop.py/QNotesDialog.cancel_pressed--crossover with--dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/db/api.py/vol_usage_update