Made Datastore.__getitem__ recursive
Made Datastore.__getitem__ recursive


Former-commit-id: af85c030709d74b2a148ea07d306c1b67e803031 [formerly af85c030709d74b2a148ea07d306c1b67e803031 [formerly b021341bd7af77b20dab5538ef11a6b03504c6fa]]
Former-commit-id: e67542dc2f03407ebf7f496652a04ffe3b1547e9
Former-commit-id: d9e1379ac35d9f46d5b784416a593e6b2f508615
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine