I have a C# project. I use Doxygen and GraphViz for generating collaboration diagrams.

When a class uses a List (e.g. public List<Item> Items = new List<Item>();) the diagram does not generate a link between the current class an the Item class.
For example:

When a class uses an Array (e.g. Item[] Items = new Item[10];) the diagram shows a link between the current class and the Item class.
For example:

Is there a way to make Doxygen recognize C# Collections?

If not, is there a workaround for this, that does not involve using Arrays instead of a Collection? (like a preprocessor that converts all instances of List<?> to ?[])