shift function to utils
shift function to utils


Former-commit-id: 486815f3402bb7cc83504cf8fd2a100029ac551e
Former-commit-id: 065b3af486ecfbb88130f768d935bf12c297770d
dssg/wikienergy,dssg/wikienergy,dssg/wikienergy,dssg/wikienergy,dssg/wikienergy