@RequiresBackgroundThread
  public static @NotNull Map<GitRepository, List<VirtualFile>> sortFilesByRepository(@NotNull Project project,
                                                                                     @NotNull Collection<? extends VirtualFile> filePaths)
    throws VcsException {
    return sortFilesByRepository(project, filePaths, false);
  }
@RequiresBackgroundThread
  public static @NotNull Map<GitRepository, List<VirtualFile>> sortFilesByRepository(@NotNull Project project,
                                                                                     @NotNull Collection<? extends VirtualFile> filePaths)