@Override
  public void put(K key, @NotNull Iterable<? extends V> values) {
    try {
      //noinspection unchecked
      C data = ensureCollection(values);
      if (data.isEmpty()) {
        myMap.remove(key);
      }
      else {
        myMap.put(key, data);
      }
    }
    catch (IOException e) {
      throw new BuildDataCorruptedException(e);
    }
  }
@Override
  public void put(K key, @NotNull Iterable<? extends V> values)