copy method
Implementation
RowEntity copy() {
return RowEntity(
cells: cells?.map((e) => e.copy()).toList(growable: false),
columns: _columns.map((e) => e.copy()).toList(growable: false),
);
}
RowEntity copy() {
return RowEntity(
cells: cells?.map((e) => e.copy()).toList(growable: false),
columns: _columns.map((e) => e.copy()).toList(growable: false),
);
}