def _store_swap_image(self, ent):
        names = ent.split('_')
        if len(names) == 2 and names[0] == 'swap':
            if len(names[1]) > 0 and names[1].isdigit():
                LOG.debug('Adding %s into backend swap images', ent)
                self.back_swap_images.add(ent)
Store base swap images for later examination.
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/virt/libvirt/imagecache.py/ImageCacheManager._store_swap_image