private static @NotNull String printLogData(@NotNull DetailedLogData firstBlockSyncData) {
    return String
      .format("Last 100 commits:\n%s\nRefs:\n%s", printCommits(firstBlockSyncData.getCommits()), printRefs(firstBlockSyncData.getRefs()));
  }
private static @NotNull String printLogData(@NotNull DetailedLogData firstBlockSyncData)