private String getSuffixText(@Nullable LookupElement item) {
    if (item != null) {
      String itemText = StringUtil.notNullize(LookupElementPresentation.renderElement(item).getItemText());
      String prefix = myLookup.itemPattern(item);
      if (prefix.isEmpty()) {
        return itemText;
      }

      FList<TextRange> fragments = LookupCellRenderer.getMatchingFragments(prefix, itemText);
      if (fragments != null && !fragments.isEmpty()) {
        List<TextRange> list = new ArrayList<>(fragments);
        return itemText.substring(list.get(list.size() - 1).getEndOffset());
      }
    }
    return "";
  }
private String getSuffixText(@Nullable LookupElement item)