@Nullable
    private String guessChangeListByPaths(@NotNull Change change) {
      FilePath bPath = ChangesUtil.getBeforePath(change);
      FilePath aPath = ChangesUtil.getAfterPath(change);

      String bListId = myListsForPathsBeforeUpdate.get(bPath);
      String aListId = myListsForPathsBeforeUpdate.get(aPath);
      if (CONFLICT_CHANGELIST_ID.equals(bListId) || CONFLICT_CHANGELIST_ID.equals(aListId)) return null;
      if (bListId == null && aListId == null) return null;
      if (bListId == null) return aListId;
      if (aListId == null) return bListId;
      return bListId.equals(aListId) ? bListId : null;
    }
@Nullable
    private String guessChangeListByPaths(@NotNull Change change)