public @NlsContexts.Label String getLeftTitle(@NotNull RevisionProcessingProgress p) {
    Entry leftEntry = getLeftEntry();
    if (leftEntry == null) return LocalHistoryBundle.message("file.does.not.exist");
    return formatTitle(leftEntry, isLeftContentAvailable(p));
  }
public @NlsContexts.Label String getLeftTitle(@NotNull RevisionProcessingProgress p)