private PackageAnnotator.AtomicPackageCoverageInfo getOrCreateFlattenDirectory(@NotNull VirtualFile file) {
    return myFlattenDirectories.computeIfAbsent(file, k -> new PackageAnnotator.AtomicPackageCoverageInfo());
  }
private PackageAnnotator.AtomicPackageCoverageInfo getOrCreateFlattenDirectory(@NotNull VirtualFile file)