public @Nullable SearchableConfigurable findSubConfigurable(String pageName) {
    if (mySubPanelFactories == null) {
      getConfigurables();
    }
    for (InnerSearchableConfigurable configurable : mySubPanelFactories.values()) {
      if (configurable.getDisplayName().equals(pageName)) {
        return configurable;
      }
    }
    return null;
  }
public @Nullable SearchableConfigurable findSubConfigurable(String pageName)