Fix for do_request and extra parameters containing path params and query string params #53
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When dealing with path like
/items_a/:items_a_id/items_b/:idand using do_request with:items_a_id,:idand:an_extra_param, do_request callspath2 times:path_or_query,But call to path, deletes
:items_a_idand:idfrom extra_params hash. So at the end, path is equal to/items_a/:items_a_id/items_b/:id?an_extra_param=