Improved docstring
Improved docstring


Former-commit-id: 5ecbfed9589222ba0ba5296f62ed732176d91250 [formerly 2c2d6f826a05e22a34d9ea4f85d4820210129664]
Former-commit-id: fe514571c17cbdd26093b2f6b20f254dc710997f
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine