public ClassNode box() {
MethodVisitor mv = controller.getMethodVisitor();
int size = stack.size();
ClassNode type = stack.get(size - 1);
if (ClassHelper.isPrimitiveType(type) && ClassHelper.VOID_TYPE != type) {
ClassNode wrapper = ClassHelper.getWrapper(type);
BytecodeHelper.doCastToWrappedType(mv, type, wrapper);
type = wrapper;
} // else nothing to box
stack.set(size - 1, type);
return type;
}
