public AviatorObject call(Map<String, Object> env, AviatorObject... args) {
if (args.length != 2) {
throw new IllegalArgumentException("include(seq,item)");
}
Object first = args[0].getValue(env);
AviatorObject second = args[1];
if (first == null) {
throw new NullPointerException("null seq");
}
Class<?> clazz = first.getClass();
boolean contains = false;