Class Option Recommendations

Below, is a list of classes that may be updated with final or abstract.
The red stars mention possible upgrade by using final or abstract keywords; The green stars mention a valid absence of the option (an extended class, that can't be final, ...); The absence of star report currently configured classes. .

Final	Abstract	Name	Path
		class ChatMessage	\siciarek\chatbundle\entity\chatmessage
		class ChatChannelRepository extends EntityRepository	\siciarek\chatbundle\entity\chatchannelrepository
		class ChatChannelAssignee	\siciarek\chatbundle\entity\chatchannelassignee
		class ChatMessageRepository extends EntityRepository	\siciarek\chatbundle\entity\chatmessagerepository
		class SiciarekChatBundle extends Bundle	\siciarek\chatbundle\siciarekchatbundle
		class ChatChannel	\siciarek\chatbundle\entity\chatchannel
		class ChatChannelAssigneRepository extends EntityRepository	\siciarek\chatbundle\entity\chatchannelassignerepository
		class ChatMessageException extends \Exception	\siciarek\chatbundle\model\chatmessageexception
		class ChatChannel implements ContainerAwareInterface	\siciarek\chatbundle\model\chatchannel
		class ChatChannelException extends \Exception	\siciarek\chatbundle\model\chatchannelexception
		class LaafFrame	\siciarek\chatbundle\model\laafframe
		class ChatMessage implements ContainerAwareInterface	\siciarek\chatbundle\model\chatmessage
		class Configuration implements ConfigurationInterface	\siciarek\chatbundle\dependencyinjection\configuration
		class SiciarekChatExtension extends Extension	\siciarek\chatbundle\dependencyinjection\siciarekchatextension
		class DefaultController extends Controller	\siciarek\chatbundle\controller\defaultcontroller
		class ChatController extends CommonController	\siciarek\chatbundle\controller\chatcontroller