IMerger createMerger(final SvnVcs vcs,
                       final File target,
                       final UpdateEventHandler handler,
                       final Url currentBranchUrl,
                       String branchName);
IMerger createMerger(final SvnVcs vcs,
                       final File target,
                       final UpdateEventHandler handler,
                       final Url currentBranchUrl,
                       String branchName)