copyTo method
Implementation
@protected
FilterData copyTo(FilterData newFilterData) {
newFilterData._selectQuery = _selectQuery;
newFilterData._limit = _limit;
final map = <String, bool>{};
_selectColumns.forEach((key, value) => map[key] = value);
newFilterData._selectColumns = map;
newFilterData._customSqlQuery = _customSqlQuery;
newFilterData._asc = _asc;
newFilterData._orderingColumn = _orderingColumn;
final whereClauses = _whereClauses.map((clause) => clause.copy()).toList();
newFilterData._whereClauses = whereClauses;
return newFilterData;
}