static PsiClass[] findOrCreateClass(Project project, final PsiMigration migration, final String qName) {
    PsiClass[] classes = JavaPsiFacade.getInstance(project).findClasses(qName, GlobalSearchScope.allScope(project));
    if (classes.length == 0) {
      classes = WriteAction.compute(() -> new PsiClass[] {migration.createClass(qName)});
    }
    return classes;
  }
static PsiClass[] findOrCreateClass(Project project, final PsiMigration migration, final String qName)