deserialize method
Deserializes the FML template elements, attributes and children
Implementation
@override
void deserialize(XmlElement xml) {
// deserialize
super.deserialize(xml);
// properties
url = Xml.get(node: xml, tag: 'url');
defaultvalue = Xml.get(node: xml, tag: 'default');
fit = Xml.get(node: xml, tag: 'fit');
filter = Xml.get(node: xml, tag: 'filter');
interactive = Xml.get(node: xml, tag: 'interactive');
}