toXML method
Implementation
@override
String toXML() {
return '''
<?xml version="1.0" encoding="utf-8"?>
<cupps xmlns="$xmlns" messageID="$messageID" xmlns:xsi="$xsi" messageName="$messageName">
${deviceLockerInfo == null ? '<$messageName result="$result"/>' : '<$messageName result="$result">${deviceLockerInfo!.toXML()}</$messageName>'}
</cupps>
'''
.replaceAll("\n", "")
.replaceAll("\t", "")
.replaceAll(" ", "");
}