@Nullable
  Fragment getEarliestBunchInInterval(final long earliestRevision, final long oldestRevision, final int desirableSize,
                                      final boolean includeYoungest, final boolean includeOldest) throws VcsException;
@Nullable
  Fragment getEarliestBunchInInterval(final long earliestRevision, final long oldestRevision, final int desirableSize,
                                      final boolean includeYoungest, final boolean includeOldest)