private static Set<String> getRemovedPaths(ModuleChunk chunk, DirtyFilesHolder<JavaSourceRootDescriptor, ModuleBuildTarget> dirtyFilesHolder) {
    if (!dirtyFilesHolder.hasRemovedFiles()) {
      return Collections.emptySet();
    }
    final Set<String> removed = CollectionFactory.createFilePathSet();
    for (ModuleBuildTarget target : chunk.getTargets()) {
      removed.addAll(dirtyFilesHolder.getRemovedFiles(target));
    }
    return removed;
  }
private static Set<String> getRemovedPaths(ModuleChunk chunk, DirtyFilesHolder<JavaSourceRootDescriptor, ModuleBuildTarget> dirtyFilesHolder)