@Override
  public <K, V> boolean getFilesWithKey(final @NotNull ID<K, V> indexId,
                                        final @NotNull Set<? extends K> dataKeys,
                                        @NotNull Processor<? super VirtualFile> processor,
                                        @NotNull GlobalSearchScope filter) {
    return processFilesContainingAllKeys(indexId, dataKeys, filter, null, processor);
  }
@Override
  public <K, V> boolean getFilesWithKey(final @NotNull ID<K, V> indexId,
                                        final @NotNull Set<? extends K> dataKeys,
                                        @NotNull Processor<? super VirtualFile> processor,
                                        @NotNull GlobalSearchScope filter)