code: @Override
      public LaContainer findChild(String namespace) {
          for (LaContainer child : children) {
              if (namespace.equals(child.getNamespace())) {
                  return child;
              }
          }
          for (LaContainer child : children) {
              final LaContainer nestedFound = child.findChild(namespace);
              if (nestedFound != null) {
                  return nestedFound;
              }
          }
          return null;
      }
docs: ===============