More refactoring of the PoeGetter
More refactoring of the PoeGetter


Former-commit-id: c7d815094a5aa19dc6203960f88c20595d5b4500 [formerly 2fc7572c8afb6d80cf6744391adbb1c523bc2479]
Former-commit-id: ab5d97edf5f913d01610eaa1fa35786312db2b05
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine