public JsValue eval(InputStream is) {
        return eval(FileUtils.toString(is));
    }
@Test
    void testJsNestedArraysToJava() {
        je.eval("var StaticPojo = Java.type('com.intuit.karate.graal.StaticPojo')");
        JsValue sp = je.eval("StaticPojo.convert({foo:[{a:1}]})");
        assertEquals("{\"foo\":[{\"a\":1}]}", sp.getAsString()); // bug fixed in graal 22.1
    }