public static TextRange getRangeOfRefactoring(ExtractInfoHelper helper) {
    final StringPartInfo stringPartInfo = helper.getStringPartInfo();
    if (stringPartInfo != null) {
      return stringPartInfo.getRange();
    }
    else {
      final GrStatement[] statements = helper.getStatements();
      int start = statements[0].getTextRange().getStartOffset();
      int end = statements[statements.length - 1].getTextRange().getEndOffset();
      return new TextRange(start, end);
    }
  }
public static TextRange getRangeOfRefactoring(ExtractInfoHelper helper)