private void debug(@Nullable CopyData copyData) {
    if (LOG.isDebugEnabled()) {
      LOG.debug("Found branch point " +
                join(Arrays.asList(myAbsoluteTrunkUrl.toDecodedString(), myAbsoluteBranchUrl.toDecodedString(), copyData), ", "));
    }
  }
private void debug(@Nullable CopyData copyData)