Go (Golang) Expert only

We have affiliate relationships that provide us access to their inventory that we provide on our web app (a search engine). We need the Rakuten Merchandiser API (and Rakuten Advertiser API) implemented to be able to access affiliates' inventories to then list in our search results when our users make searches, and be able to effectively consistently update that inventory to make sure our search results are up-to-date. The documentation for the merchandiser api is attached. The advertiser search api what will simply allow the merchandiser api to know which advertiser is who for purposes of defining the inventory's origin in our search results