private static boolean isInsideFormatSubstitutionChunk(@NotNull final PyStringLiteralExpression expression, final int offset) {
      List<PyStringFormatParser.SubstitutionChunk> substitutions = PyStringFormatParser.filterSubstitutions(
        PyStringFormatParser.parseNewStyleFormat(expression.getStringValue()));
      return isInsideSubstitutionChunk(offset, substitutions);
    }
private static boolean isInsideFormatSubstitutionChunk(@NotNull final PyStringLiteralExpression expression, final int offset)