code: @Override
      public IntIterator iterator() {
  
          return new IntIterator() {
  
              private final org.roaringbitmap.IntIterator iterator = bitmap.getIntIterator();
  
              @Override
              public int nextInt() {
                  return iterator.next();
              }
  
              @Override
              public int skip(int k) {
                  throw new UnsupportedOperationException("Views do not support skipping in the iterator");
              }
  
              @Override
              public boolean hasNext() {
                  return iterator.hasNext();
              }
          };
      }
docs: Returns a fastUtil intIterator that wraps a bitmap intIterator