If a projection is set, set the epsg code as well if specified. This is something that's required by our internal code, where despite the right projection, the epsg code was wrong.
If a projection is set, set the epsg code as well if specified. This is something that's required by our internal code, where despite the right projection, the epsg code was wrong.

jumpinjackie/fusion-multimap,jumpinjackie/fusion-multimap,jumpinjackie/fusion-multimap