Revert "removed some blank lines at the end of the file"
Revert "removed some blank lines at the end of the file"

This reverts commit 8e755df4d5a558b74b282abf279f9f336a001e5f [formerly e56d703e01fe4c1a0690b36d1e81aae8d77cd013] [formerly 4313cf6c4231383a5b79d4595776428d4f7ab8f7 [formerly 8ec1b9e2392713c34551837b4ddaab96d09a9cec]].


Former-commit-id: 933b0ca8a81e497ab247f95e30c60541b011c065 [formerly 1ed9167f85a143ae14d56301adaa72ee54e956b9]
Former-commit-id: 11536de7bfc4c8cd7a7d702425b3e785b0c17a5b
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine