Why are NuGet project references not included?

I'm trying to generate an SBOM using sbom-tool, which uses this package to find dependencies through NuGet configurations. I noticed that project references are missing.

When running component-detection in isolation, I noticed that project references are also omitted in the output. Running a debugger, I can see that there is specific code to parse them, but, they get filtered out in final NavigateAndRegister().

What is the reason for this? This means that I won't see components used by these projects, which is a requirement for my SBOM output. This code was introduced in the "initial commit", so not much more information I can gather from git history.

When removing the early out for || library.Type == ProjectDependencyType, output seems to work fine. Except, the project references show up as "NuGet" references in the ScanManifest, instead of "project" references. I.e., they have " - NuGet" appended to their name and version.

Start in src/Microsoft.ComponentDetection.Detectors/nuget/NuGetProjectModelProjectCentricComponentDetector.cs, especially NavigateAndRegister() and the ProjectDependencyType early-out. Trace how project references reach the ScanManifest and determine the intended distinction between NuGet and project references. Done means project references are included without being mislabeled as NuGet components.