@NotNull
  private static List<PropertyRecord> collectRecords(@NotNull SvnPropertiesDiffRequest request) {
    List<DiffContent> originalContents = request.getContents();
    List<PropertyData> properties1 = getProperties(originalContents.get(0));
    List<PropertyData> properties2 = getProperties(originalContents.get(1));

    Map<String, PropertyValue> before = new HashMap<>();
    Map<String, PropertyValue> after = new HashMap<>();
    if (properties1 != null) {
      for (PropertyData data : properties1) {
        before.put(data.getName(), data.getValue());
      }
    }
    if (properties2 != null) {
      for (PropertyData data : properties2) {
        after.put(data.getName(), data.getValue());
      }
    }

    List<PropertyRecord> records = new ArrayList<>();
    for (String name : ContainerUtil.union(before.keySet(), after.keySet())) {
      records.add(createRecord(name, before.get(name), after.get(name)));
    }

    ContainerUtil.sort(records, (o1, o2) -> StringUtil.naturalCompare(o1.getName(), o2.getName()));

    return records;
  }
@NotNull
  private static List<PropertyRecord> collectRecords(@NotNull SvnPropertiesDiffRequest request)