Exception in Fields property of ContextualType

[vvdb-architecture]

Consider the following definition:

        class Base
        {
            public int Field1;
        }

        class Derived<T> : Base
        {
            public T? Field2;
        }

... then the following code will fail when the Fields property is called:

            var ctype = typeof(Derived<int>).ToContextualType();
            foreach (var f in ctype.Fields)
            {
                Console.WriteLine(f.Name);
            }

The reason is explained in a frustrating NSwag bug reported here: RicoSuter/NSwag#4842 (comment)

This is using Namotion.Reflection 3.1.1.

After some further digging, it looks like in the master bransh of Namotion, this was corrected.
Merged pull request #151 (comment)

    _fields = Type.GetRuntimeFields().Select(field =>
                            {
                                if (field.DeclaringType is { IsGenericType: true })
                                {
                                    var genericType = field.DeclaringType.GetGenericTypeDefinition();
                                    var genericField = genericType.GetRuntimeField(field.Name);
                                    if (genericField != null && genericField.FieldType.IsGenericParameter)
                                    {
                                        var actualType = GenericArguments[genericField.FieldType.GenericParameterPosition];
                                        var actualIndex = actualType._nullableFlagsIndex;
                                        return new ContextualFieldInfo(field, ref actualIndex, actualType._nullableFlags);
                                    }
                                }

                                var index = 0;
                                return new ContextualFieldInfo(field, ref index, null);
                            }).ToArray();

... but I don't know how to proceed to generate a new version of NSwag with this included.