private @NotNull Object2IntMap<HighlightSeverity> ensureAllStandardIncluded(@NotNull List<? extends HighlightSeverity> read, @NotNull List<HighlightSeverity> knownSeverities) {
    Object2IntMap<HighlightSeverity> orderMap = fromList(read);
    if (orderMap.isEmpty()) {
      return fromList(knownSeverities);
    }

    // enforce include all known
    List<HighlightSeverity> list = getSortedSeverities(orderMap);
    for (HighlightSeverity stdSeverity : knownSeverities) {
      if (!list.contains(stdSeverity)) {
        for (int oIdx = 0; oIdx < list.size(); oIdx++) {
          HighlightSeverity orderSeverity = list.get(oIdx);
          if (orderSeverity.myVal > stdSeverity.myVal) {
            list.add(oIdx, stdSeverity);
            myReadOrder = null;
            break;
          }
        }
      }
    }
    return fromList(list);
  }
private @NotNull Object2IntMap<HighlightSeverity> ensureAllStandardIncluded(@NotNull List<? extends HighlightSeverity> read, @NotNull List<HighlightSeverity> knownSeverities)