gRPC & ASP.NET Core 5: Add a gRPC service reference from a remote protobuf over Route-To-Code

A while ago, I published a post that explained how to expose proto files within an ASP.NET Core gRPC app using Route-To-Code that you can find here: Exposing proto files in a gRPC service over a frameworkless and lightweight API - Anthony Giretti's .NET blog I only explained how to expose them and access them from a browser.