@Override
    protected @NotNull Change createChange(@NotNull Change.Type type, @Nullable FilePath beforePath, @Nullable FilePath afterPath) {
      ContentRevision beforeRevision = beforePath == null ? null : myDiffHandler.createContentRevision(beforePath, myFirstParent);
      ContentRevision afterRevision = afterPath == null ? null : myDiffHandler.createContentRevision(afterPath, myCommit);
      return new Change(beforeRevision, afterRevision);
    }
@Override
    protected @NotNull Change createChange(@NotNull Change.Type type, @Nullable FilePath beforePath, @Nullable FilePath afterPath)