How to Exclude Parsing of Specific Library (Hl7.Fhir.Specification.R4) in NSwag

[pv77-2]

I recently added a new NuGet package (Hl7.Fhir.Specification.R4) to my ASP.NET Core project. After adding this package, NSwag started showing an error related to assembly scanning. I would like to exclude this specific library from being scanned by NSwag when generating the OpenAPI document.

Steps to Reproduce:

1. Create a new ASP.NET Core Web API project.
2. Install NSwag and configure it in Startup.cs.
3. Add the Hl7.Fhir.Specification.R4 NuGet package to the project.
4. Run the NSwag code generation.

Expected Behavior:
NSwag should generate the OpenAPI document without any issues.

Actual Behavior:
NSwag throws an error related to assembly scanning, indicating it requires the assembly to have either a BuildWebHost or CreateWebHostBuilder/CreateHostBuilder method.
NSwag requires the assembly [My-Project-Assembly] to have either an BuildWebHost or CreateWebHostBuilder/CreateHostBuilder method. See https://docs.microsoft.com/en-us/aspnet/core/fundamentals/hosting?tabs=aspnetcore2x for suggestions on ways to refactor your startup type.

What I've Tried:
Checked that Program.cs has a CreateHostBuilder method.
Looked for ways to limit assembly scanning in NSwag but couldn't find a direct way to do it.

Questions:

1. Is there a way to exclude specific assemblies or namespaces from being scanned by NSwag?
2. Has anyone else encountered this issue when adding the Hl7.Fhir.Specification.R4 library?

Any help or guidance would be greatly appreciated.

[TipluTillR]

You can exclude specific types (ExcludedTypeNames setting) but AFAIK not namespaces. I would also really like to be able to exclude all types within a namespace or with a prefix wildcard.