deserialize method
Deserializes the FML template elements, attributes and children
Implementation
@override
void deserialize(XmlElement xml) {
// deserialize
super.deserialize(xml);
// get header cells
cells.addAll(
findDescendantsOfExactType(TableFooterCellModel, breakOn: TableModel)
.cast<TableFooterCellModel>());
// remove cells from child list
removeChildrenOfExactType(TableFooterCellModel);
// build dynamic prototypes
_buildDynamicPrototypes();
}