public SweepRecord(MineFieldTile_Model inTile, Minefield_Tile_Event inAction)
 {
     tile   = inTile;
     action = inAction;
 }
 public void record(MineFieldTile_Model affectedTile, //the tile that the user clicked
                    Minefield_Tile_Event action       //what the user did to the tile:  swept, flagged, or questioned
                    )
 {
     allSweepRecords.Add(new SweepRecord(affectedTile, action));
 }