public void merge(@NotNull GitReference reference, @NotNull GitBrancher.DeleteOnMergeOption deleteOnMerge,
                    @NotNull List<? extends GitRepository> repositories) {
    updateInfo(repositories);
    new GitMergeOperation(myProject, myGit, myUiHandler, repositories, reference, deleteOnMerge).execute();
  }
public void merge(@NotNull GitReference reference, @NotNull GitBrancher.DeleteOnMergeOption deleteOnMerge,
                    @NotNull List<? extends GitRepository> repositories)