Added docstring
Added docstring


Former-commit-id: 1dd32a8dc1e3eb54414e032c931a30ef60220cef [formerly 1dd32a8dc1e3eb54414e032c931a30ef60220cef [formerly 359205cd82809aecba610b0140680e9389ed01b5]]
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gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine