code: private void addArrayMethods(List<MethodNode> methods, ClassNode receiver, String name, ClassNode[] args) {
          if (args.length!=1) return;
          if (!receiver.isArray()) return;
          if (!isIntCategory(getUnwrapper(args[0]))) return;
          if ("getAt".equals(name)) {
              MethodNode node = new MethodNode(name, Opcodes.ACC_PUBLIC, receiver.getComponentType(), new Parameter[]{new Parameter(args[0],"arg")}, null, null);
              node.setDeclaringClass(receiver.redirect());
              methods.add(node);
          } else if ("setAt".equals(name)) {
              MethodNode node = new MethodNode(name, Opcodes.ACC_PUBLIC, VOID_TYPE, new Parameter[]{new Parameter(args[0],"arg")}, null, null);
              node.setDeclaringClass(receiver.redirect());
              methods.add(node);
          }
      }
docs: add various getAt and setAt methods for primitive arrays
  @param receiver the receiver class
  @param name  the name of the method
  @param args the argument classes