anchor.diff:        Util.convertMicrosToStandardUnitString(
             Int64.parseInt(budgetAmountMicros));
   
  +  /// Converts proto [Date] into Excel date time format.
     static String _calculateDate(
             InsertionOrder_Budget_BudgetSegment_DateRange_Date date) =>
  -      '${date.month}/${date.day}/${date.year}';
  +      '${date.month}/${date.day}/${date.year} $_timeFormat';
   }
   
   /// Below are wrapper functions for Office Excel APIs.
  
positive.code: 
    static const _borderStyle = 'Continuous';
    static const _currencyFormat = '\$#,##0.00';
  
    /// Column addresses calculated based on [_tableHeader].
    static final _spentColumn =
  
negative.code:     'End Date'
    ];
  
  
    /// Waits for Office APIs to be ready and then creates
    /// a new spreadsheet with [sheetName] and populates the spreadsheet with
    /// entries in the [insertionOrderList].
  