Improved docstring [skip CI]
Improved docstring [skip CI]


Former-commit-id: fb060743407ab2bc684bf4066c835ecc588cc98b [formerly c4fbc2efb85a9078cf2876d3f94d08940c39a0b4]
Former-commit-id: 7dea17d39c80e40201b877ec7c9b56122cb44664
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine