Update a docstring [skip CI]
Update a docstring [skip CI]


Former-commit-id: ae2acac5d94d053587b0501dd0445c6856e3e45c [formerly ae2acac5d94d053587b0501dd0445c6856e3e45c [formerly 7b3100cb0c683b9dd041af85712fa0c6eb3ce7f6]]
Former-commit-id: 234e73615ffe743ab83ea1eb37e742cc634889e3
Former-commit-id: 18aeade1fe4f69bf3eb74ce9047132e560e03237
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine