from method
Given a String, will return the correct TautulliUserGroup
object.
Implementation
TautulliUserGroup? from(String? key) {
switch(key) {
case 'admin': return TautulliUserGroup.ADMIN;
case 'guest': return TautulliUserGroup.GUEST;
case '': return TautulliUserGroup.NULL;
}
return null;
}