private ClassNode configureWildcardType(WildcardType wildcardType) { ClassNode base = ClassHelper.makeWithoutCaching("?"); base.setRedirect(ClassHelper.OBJECT_TYPE); // TODO: more than one lower bound for wildcards? ClassNode[] lowers = configureTypes(wildcardType.getLowerBounds()); ClassNode lower = null; // TODO: is it safe to remove this? What was the original intention? if (lower != null) lower = lowers[0]; ClassNode[] upper = configureTypes(wildcardType.getUpperBounds()); GenericsType t = new GenericsType(base, upper, lower); t.setWildcard(true); ClassNode ref = ClassHelper.makeWithoutCaching(Object.class, false); ref.setGenericsTypes(new GenericsType[] {t}); return ref; }