Org.OData.Core.V1.Description Core Vocabulary Annotation Discrepancy

The DescriptionConfiguration class returned by extension methods such as HasDescription<TEntity>(this NavigationSourceConfiguration<TEntity> navigationSource) returns a record edm expression, while methods in the EDM library such as GetLongDescriptionAnnotation(this IEdmModel model, IEdmVocabularyAnnotatable target) expects it to be IEdmStringConstantExpression. The vocabulary at the OASIS-TC also specifies that the annotation should be a string.

Assemblies affected

OData ModelBuilder 1.0.9

Reproduce steps

Create a simple console project.

dotnet new console --use-program-main
dotnet add package Microsoft.OData.ModelBuilder --version 1.0.9
dotnet add package Microsoft.OData.Edm --version 7.9.4

Paste the following into Program.cs

using Microsoft.OData.Edm;
using Microsoft.OData.ModelBuilder;

namespace odata_core_vocab_fault;

record Book(string ISBN);

class Program
{
    static void Main(string[] args)
    {
        var builder = new ODataConventionModelBuilder();

        var books = builder.EntitySet<Book>("Books");
        books
            .EntityType
            .HasKey(e => e.ISBN);
        
        books
            .HasDescription()
            .HasDescription("A collection of books.");

        var edmModel = builder.GetEdmModel();

        var entityset = edmModel.FindDeclaredEntitySet("Books");

        var description = edmModel.GetDescriptionAnnotation(entityset);

        Console.WriteLine(description);
    }
}

Expected result

The console prints "A collection of books."

Actual result

The console prints nothing. Inspecting the result while debugging shows description as null.