private @NotNull Map<VirtualFile, Repository> findNewRoots(@NotNull Set<VirtualFile> knownRoots) {
    Map<VirtualFile, Repository> newRootsMap = new HashMap<>();
    for (VcsRoot root : myVcsManager.getAllVcsRoots()) {
      VirtualFile rootPath = root.getPath();
      if (!knownRoots.contains(rootPath)) {
        Repository repository = tryCreateRepository(myProject, root.getVcs(), rootPath, this);
        if (repository != null) {
          newRootsMap.put(rootPath, repository);
        }
      }
    }
    return newRootsMap;
  }
private @NotNull Map<VirtualFile, Repository> findNewRoots(@NotNull Set<VirtualFile> knownRoots)