{
            Name: "methods",
            Fn: func(receiver Object) builtinMethodBody {
                return func(t *thread, args []Object, blockFrame *callFrame) Object {
                    methods := []interface{}{}
                    set := map[string]struct{}{}
                    targets := []*RClass{}
                    if receiver.SingletonClass() != nil {
                        targets = append(targets, receiver.SingletonClass())
                    }
                    targets = append(targets, receiver.Class())
                    for _, klass := range targets {
                        for klass != nil {
                            env := klass.Methods
                            for env != nil {
                                for key := range env.store {
                                    set[key] = struct{}{}
                                }
                                env = env.outer
                            }
                            if klass.superClass == klass {
                                break
                            }

                            klass = klass.superClass
                        }
                    }
                    for k := range set {
                        methods = append(methods, k)
                    }
                    return t.vm.initObjectFromGoType(methods)
                }
            },
        },