Method get

src/main/java/groovy/util/Iterators.java:399–408

(int index)

        }

        private T get(int index) {
            while (cache.size() <= index) {
                if (source.hasNext()) {
                    cache.add(source.next());
                } else {
                    return null;
                }
            }
            return cache.get(index);
        }

        private int size() {
            if (source.hasNext()) return Integer.MAX_VALUE;