deserialize method
Deserializes the FML template elements, attributes and children
Implementation
@override
void deserialize(XmlElement xml)
{
// deserialize
super.deserialize(xml);
// set constraints
width = Xml.get(node: xml, tag: 'width');
height = Xml.get(node: xml, tag: 'height');
minWidth = Xml.get(node: xml, tag: 'minwidth');
maxWidth = Xml.get(node: xml, tag: 'maxwidth');
minHeight = Xml.get(node: xml, tag: 'minheight');
maxHeight = Xml.get(node: xml, tag: 'maxheight');
}