How to identify arguments object as Value? about graaljs HOT 8 CLOSED

getMetaObject().toString(): Array
hasArrayElements(): true
string array(): [arg0, arg1]

        try(Context ctx = Context.create("js")) {
            Value arguments = ctx.eval("js", "(function () { return arguments; })('a', 'b', 'c')");
            System.out.println("getMetaObject().toString(): " + arguments.getMetaObject().toString());
            System.out.println("hasArrayElements(): " + arguments.hasArrayElements());
            System.out.println("string array(): " + Arrays.toString(arguments.as(String[].class)));
        }

getMetaObject().toString(): Object
hasArrayElements(): false
Exception in thread "main" java.lang.ClassCastException: Cannot convert '{0: "a", 1: "b", 2: "c", length: 3, callee: {...}, Symbol(Symbol.iterator): {...}}'(language: JavaScript, type: Object) to Java type 'java.lang.String[]': Value must have array elements.

        try(Context ctx = Context.create("js")) {
            Value arguments = ctx.eval("js", "(function () { return arguments; })('a', 'b', 'c')");
            ctx.getBindings("js").putMember("obj", arguments);
            System.out.println(ctx.eval("js", "Object.prototype.toString.call(obj)"));
        }

[object Arguments]

Value isArguments = ctx.eval("js", "(function(obj) {return Object.prototype.toString.call(obj) === '[object Arguments]';})");

boolean isArguments(Value obj) {
  return isArguments.execute(obj).asBoolean();
}