39   this.column = aColumn == null ? null : aColumn;
232                      column: this.column,  property
334     column: 0  property
346         && original.column !== null) {
349          || lastOriginalColumn !== original.column
355             column: original.column  property
359             column: generated.column  property
366       lastOriginalColumn = original.column;
373           column: generated.column  property
382         generated.column = 0;
392               column: original.column  property
396               column: generated.column  property
402         generated.column++;