Add an assertion [skip hazardlib]
Add an assertion [skip hazardlib]


Former-commit-id: fd9f256622d38d9875dc20be65b49d53f20e3ac8 [formerly 57594ceb67426f799ff0d3207e17800aa86010d6]
Former-commit-id: beefafaaf60480c0d3eb76804de8c796d73ec2b4
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine