private static void mark(@Nullable PsiElement o, @NotNull AnnotationHolder holder, @NotNull TextAttributesKey key) {
    if (o != null) {
      holder.newSilentAnnotation(HighlightSeverity.INFORMATION).range(o).textAttributes(key).create();
    }
  }
private static void mark(@Nullable PsiElement o, @NotNull AnnotationHolder holder, @NotNull TextAttributesKey key)