code: public List<VoltXMLElement> findChildrenRecursively(String name)
      {
          List<VoltXMLElement> retval = new ArrayList<>();
          for (VoltXMLElement vxe : children) {
              if (name.equals(vxe.name)) {
                  retval.add(vxe);
              }
              retval.addAll(vxe.findChildrenRecursively(name));
          }
          return retval;
      }
docs: Given a name, recursively find all the children  with matching name, if any.