private static PsiElement getContainer(@NotNull PsiElement refElement) {
    for (ContainerProvider provider : ContainerProvider.EP_NAME.getExtensionList()) {
      PsiElement container = provider.getContainer(refElement);
      if (container != null) {
        return container;
      }
    }
    // it's assumed that in the general case of unknown language the .getParent() will lead to reparse,
    // (all these Javascript stubbed methods under non-stubbed block statements under stubbed classes - meh)
    // so return null instead of refElement.getParent() here to avoid making things worse.
    return null;
  }
private static PsiElement getContainer(@NotNull PsiElement refElement)