Hi. I can't find anywhere on the PayPal developer site the JSON/YAML files describing the API in the Swagger/OpenAPI format. I'm using the invoicing API, which doesn't have a SDK, or at least not a SDK for C#/.NetCore. Manually creating a REST client from the documentation is just a big pain in the a*s and it's error prone. If the Invoicing API is described using OpenAPI files, creating a client for C# it's quite easy with tools like Visual Studio 2019, NSwagStudio or NSwag (just to mention a few). Any help in locating that information is greatly appreciated. Thanks in advance
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