I created a quite simple structure within MPS2018.3 and created also a simple mapping within a generator. Within the generator I use a linkedlist of the mps base language. Additionally I use a linkedhashset.
I also created a solution to make use of it. The solution works more or less as expected. However there are two import Statements that I do not understand and seem to come from the mps base language.
I expected however, that the preview text would be plain java. I want to get rid of those import statements listed above to use the generated text within a usual jdk-environment.