code: public @Nonnull Stream<XQuery> stream() {
          return new NodeListSpliterator(node.getChildNodes()).stream()
                          .filter(it -> it instanceof Element)
                          .map(XQuery::new);
      }
docs: Streams all children of this element. Children elements are represented by
  {@link XQuery} objects as well.
  
  @return {@link Stream} of children