code: private List<? extends Node> list(Node<?> node, List<Object[]> includes) throws IOException {
      	Node child;
  
      	if (includes.size() == 1 && includes.get(0)[0] instanceof String) {
              child = node.join((String) includes.get(0)[0]);
              if (child.exists()) {
                  return Collections.singletonList(child);
              } else {
                  return Collections.emptyList();
              }
      	} else {
          	return node.list();
          }
      }
docs: avoids node.list() call if there is exactly 1 include with a literal head