@NotNull
    public Map<VirtualFile, VirtualFile> acquireCopiedFiles() {
      return withLock(PROCESSING_LOCK.writeLock(), () -> {
        Map<VirtualFile, VirtualFile> copyFromMap = new HashMap<>(myCopyFromMap);
        myCopyFromMap.clear();
        return copyFromMap;
      });
    }
@NotNull
    public Map<VirtualFile, VirtualFile> acquireCopiedFiles()