private static RemoveConfigurableHandler<?> findHandler(List<? extends RemoveConfigurableHandler<?>> handlers,
                                                          Class<? extends NamedConfigurable> configurableClass) {
    for (RemoveConfigurableHandler<?> handler : handlers) {
      if (handler.getConfigurableClass().isAssignableFrom(configurableClass)) {
        return handler;
      }
    }
    return null;
  }
private static RemoveConfigurableHandler<?> findHandler(List<? extends RemoveConfigurableHandler<?>> handlers,
                                                          Class<? extends NamedConfigurable> configurableClass)