OPT: made usage for this function
OPT: made usage for this function

Former-commit-id: 969aad0b2762a8b4cfab493eb0918dd0ad0deeea
Former-commit-id: 0eb902aca2860984c9695207cb2c50bc4cc71ed2
3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox