GridCoordinate.fromJson constructor
      
      GridCoordinate.fromJson(
    
    
- Map json_
 
Implementation
GridCoordinate.fromJson(core.Map json_)
    : this(
        columnIndex: json_['columnIndex'] as core.int?,
        rowIndex: json_['rowIndex'] as core.int?,
        sheetId: json_['sheetId'] as core.int?,
      );