execute method
Implementation
T? execute(DOMAction<T> action, T? target, T? self,
{DOMTreeMap? treeMap, DOMContext? context}) {
T? result;
if (action is DOMActionSelect<T>) {
result = selectByID(action.id, target, self, treeMap, context);
} else if (action is DOMActionCall<T>) {
result =
call(action.name, action.parameters, target, self, treeMap, context);
}
return result;
}