anchor.diff:    /// The collection of worksheets in the workbook.
     external WorksheetCollection get worksheets;
   
  +  /// The collection of tables associated with the workbook.
  +  external TableCollection get tables;
  +
     /// Returns the currently selected one or more ranges from the workbook.
     external Range getSelectedRange();
   }
  
positive.code:   external RangeFormat get format;
  
    /// The raw values of the specified range.
    external set values(List<List<dynamic>> v);
  
    /// Loads the specified properties of the object.
    external Range load(String v);
  }
  
  /// Wrapper for Excel.RangeFormat class.
  ///
  /// ``` js
  ///   Excel.RangeFormat.autofitColumns()
  /// ```
  @JS()
  class RangeFormat {
    /// Changes the width of the columns of the current range to
    /// achieve the best fit.
    external void autofitColumns();
  }
  
negative.code: /// ``` js
  ///   Excel.Range.format
  ///   Excel.Range.values
  ///   Excel.Range.getEntireColumn()
  ///   Excel.Range.getEntireRow()
  /// ```
  @JS()
  class Range {
  