private static PySubstitutionChunkReference[] getReferencesFromFormatString(@NotNull final PyStringLiteralExpression element) {
    final List<PyStringFormatParser.SubstitutionChunk> chunks = PyStringFormatParser.filterSubstitutions(
      PyStringFormatParser.parseNewStyleFormat(element.getText()));
    return getReferencesFromChunks(element, chunks);
  }
private static PySubstitutionChunkReference[] getReferencesFromFormatString(@NotNull final PyStringLiteralExpression element)