Cannot find Bundle or TransactionBuilder defined in my DLL

[ghost]

Hello, just getting started with this API. I've downloaded the R4 version from https://nuget.info/packages/Hl7.Fhir.R4/5.3.0 for net6.0 and linked my project to that DLL (Hl7.Fhir.R4.dll) directly. I did not install via nuget because my org only allows nuget package installs from one source.

My IDE shows that classes like Bundle and TransactionBuilder are not defined ("The type or namespace Bundle does not exist in the namespace Hl7.Fhir.Model" when fully qualified, or "The type of namespace Bundle could not be found" if not fully qualified).

However, a class like 'Patient' works fine.

What am I missing? Is this because I used just the Hl7.Fhir.R4.dll and am missing something that I might have had added if installing via nuget?

[ghost]

I was able to get the nuget restriction lifted temporarily and install the Hl7.Fhir.R4 package from nuget, which installed the additional dependencies needed, which seems to have resolved the issue with not being able to find the Bundle class definition.