protected void addLookupItem( Set<LookupElement> set, TailType tailType, @NotNull Object completion, final PsiFile file, final CompletionVariant variant) { LookupElement ret = objectToLookupItem(completion); if (ret == null) return; if (!(ret instanceof LookupItem)) { set.add(ret); return; } LookupItem item = (LookupItem) ret; final InsertHandler insertHandler = variant.getInsertHandler(); if (insertHandler != null && item.getInsertHandler() == null) { item.setInsertHandler(insertHandler); item.setTailType(TailType.UNKNOWN); } else if (tailType != TailType.NONE) { item.setTailType(tailType); } final Map<Object, Object> itemProperties = variant.getItemProperties(); for (final Object key : itemProperties.keySet()) { item.setAttribute(key, itemProperties.get(key)); } set.add(ret); }