void (@NotNull PsiElement element, @NotNull String id, @Nullable String alternativeID) { mySuppressedElements.computeIfAbsent(id, __ -> new HashSet<>()).add(element); if (alternativeID != null && !alternativeID.equals(id)) { mySuppressedElements.computeIfAbsent(alternativeID, __ -> new HashSet<>()).add(element); } }