void (@NotNull Module module, @NotNull ModifiableRootModel model) { super.configureModule(module, model); Library library = model.getModuleLibraryTable().getLibraryByName(KotlinJdkAndLibraryProjectDescriptor.LIBRARY_NAME); assert library != null; Library.ModifiableModel modifiableModel = library.getModifiableModel(); modifiableModel.addRoot(VfsUtil.getUrlForLibraryRoot(TestKotlinArtifacts.getKotlinStdlibSources()), OrderRootType.SOURCES); modifiableModel.commit(); }