Revert "Revert "changes""

This reverts commit 611d327fb45b58f20b3da3488022f005a8b926e9.

src/main/java/com/zipcodewilmington/generic/group/Group.java

@@ -9,7 +9,8 @@ import java.util.function.Predicate;
 /**
  * @author leon on 06/12/2018.
  */
-public class Group<ChangeThisTypeRespectively,ChangeThisOneToo> extends AbstractGroup{
+public class Group<TypeOfId extends Serializable,
+        TypeOfEntity extends IdentifiableInterface<TypeOfId>> extends AbstractGroup implements GroupInterface{
     @Override
     public Integer count() {
         return null;

src/main/java/com/zipcodewilmington/generic/identifiables/ActionFigure.java

@@ -5,14 +5,15 @@ import java.io.Serializable;
 /**
  * @author leon on 05/12/2018.
  */
-public class ActionFigure implements IdentifiableInterface {
+public class ActionFigure<TypeOfId extends Serializable> implements IdentifiableInterface {
+    private TypeOfId id;
 
     @Override
     public Serializable getIdentity() {
-        return null;
+        return id;
     }
 
     public Class getIdentityType() {
-        return null;
+        return id.getClass();
     }
 }

src/main/java/com/zipcodewilmington/generic/identifiables/Person.java

@@ -5,11 +5,12 @@ import java.io.Serializable;
 /**
  * @author leon on 05/12/2018.
  */
-public class Person implements IdentifiableInterface {
+public class Person<TypeOfId extends Serializable> implements IdentifiableInterface {
+    private TypeOfId id;
 
     @Override
     public Serializable getIdentity() {
-        return null;
+        return id;
     }
 
     public Class getIdentityType() {