@Nullable
  private static Change getSvnChangeLayer(@NotNull Change change) {
    for (Map.Entry<String, Change> entry : change.getOtherLayers().entrySet()) {
      if (SvnChangeProvider.PROPERTY_LAYER.equals(entry.getKey())) {
        if (change.getOtherLayers().size() != 1) LOG.warn("Some of change layers ignored");
        return entry.getValue();
      }
    }
    return null;
  }
@Nullable
  private static Change getSvnChangeLayer(@NotNull Change change)