@Nullable
  public static InvertBooleanDelegate findInvertBooleanDelegate(PsiElement element) {
    for (InvertBooleanDelegate delegate : EP_NAME.getExtensionList()) {
      if (delegate.isVisibleOnElement(element)) {
        return delegate;
      }
    }
    return null;
  }
@Nullable
  public static InvertBooleanDelegate findInvertBooleanDelegate(PsiElement element)