shift function to utils
shift function to utils


Former-commit-id: 1b5dbfc166bd1d1b90bde81a66dd77573a1043fc [formerly 065b3af486ecfbb88130f768d935bf12c297770d] [formerly 486815f3402bb7cc83504cf8fd2a100029ac551e]
Former-commit-id: bec7e6b6255c9f2d3f6f7ceb010205bbc516c6af
Former-commit-id: 4e4900993d1b27ff3047a9b30758d706a774c098
dssg/wikienergy,dssg/wikienergy,dssg/wikienergy,dssg/wikienergy,dssg/wikienergy