DSC custom resource using Classes - Each class in separate file

Hi,

According to this older post DSC custom resource using Classes - Each class in separate file you have to put all classes that are implementing custom DSC resources in a single file to get it working.
This post is 1.5 years old.
Is this still the case?
Or is there a way to put the classes in separate files meanwhile?

Thanks!
Elena

It’s pretty much still the case.