code: public static void isEmpty( Object[] argument,
                                  String name ) {
          isNotNull(argument, name);
          if (argument.length > 0) {
              throw new IllegalArgumentException(CommonI18n.argumentMustBeEmpty.text(name));
          }
      }
docs: Check that the array is empty
  
  @param argument Array
  @param name The name of the argument
  @throws IllegalArgumentException If array is not empty