private @Nullable DiffContent getDiffContent(@NotNull Revision r, RevisionProcessingProgress p) {
    Entry e = r.findEntry();
    if (e == null) return null;
    Long changeSetId = r.getChangeSetId();
    if (changeSetId == null) return EntryDiffContentKt.createCurrentDiffContent(myProject, myGateway, e.getPath(), myFrom, myTo);
    return EntryDiffContentKt.createDiffContent(myGateway, e, changeSetId, myCalculator, p);
  }
private @Nullable DiffContent getDiffContent(@NotNull Revision r, RevisionProcessingProgress p)