Create a design without the default fileset

[RasmusGOlsen]

Can the Design constructor be changed so you can create a Design object without a default FileSet. In my project I create the FileSets and then add them to the design. Then I always have this default FileSet I don't use for anything. I need to handle in a special way when iterating the filesets.

[Paebbels]

I see currently 2 options:

1. The default fileset is just a fileset as others, but it's auto generated and named default. This name can be modified using the .Name property.
2. I could add a parameter to __init__(..., defaultFileset: Nullable[Fileset], ...) so you can handover a fileset, that is used as a default fileset.

default = Fileset("some_fileset")
design = Design("my_design", ..., defaultFileset=default, ...)

Would option 2 serve your needs?