List<String> (String className, boolean deep, SearchScope scope) { PsiClass aClass = myFixture.getJavaFacade().findClass(className); assertNotNull(aClass); return ProgressManager.getInstance().runProcess( () -> streamOf(ClassInheritorsSearch.search(aClass, scope, deep)).map(PsiClass::getQualifiedName).collect(Collectors.toList()), null ); }