AspectJ is a aspect-oriented programming language based on Java. It allows implementing and weaving cross-cutting concerns into Java programs. AspectJ used to use lst files (now ''ajproperties''?) so this creator is outdated but still interesting in that it works very simply

final AspectCreator ac = new AspectCreator(new String[] { <some lst files> });
this.getCodeLevelModel().create(ac);

The padl.generator.helper.ModelGenerator interface in project PADL Generator hides the implementation details of creating a PADL model and should be used in most of the cases.