Unable to initialize generic class with an array

class Foo<T> {
  Foo(T[] x) {}
}

class Main {
  static final void test() {
    Byte[][] arg = null;
    Foo<Byte[]> res = new Foo<Byte[]>(arg)
  }
}

org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
Main.groovy: 8: [Static type checking] - Cannot call Foo#<init>(java.lang.Byte[][]) with arguments [java.lang.Byte[][]]
 @ line 8, column 23.
       Foo<Byte[]> res = new Foo<Byte[]>(arg)
                         ^

1 error

class Main {
  static final void test() {
    byte[][] arg = null;
    byte[] res = new com.fasterxml.jackson.databind.util.ArrayIterator<byte[]>(arg).next();
  }
}