public GitLogProvider(
     @NotNull Project project,
     @NotNull GitRepositoryManager repositoryManager,
     @NotNull VcsLogObjectsFactory factory,
     @NotNull GitUserRegistry userRegistry) {
   myProject = project;
   myRepositoryManager = repositoryManager;
   myUserRegistry = userRegistry;
   myRefSorter = new GitRefManager(myRepositoryManager);
   myVcsObjectsFactory = factory;
   myVcs = ObjectUtils.assertNotNull(GitVcs.getInstance(project));
 }