added methods and testing for `GroupInterface.getIdentityType()` and `GroupInterface.getIdentifiableType()`

pom.xml

     <modelVersion>4.0.0</modelVersion>
 
     <groupId>com.zipcodewilmington</groupId>
-    <artifactId>quiz2</artifactId>
+    <artifactId>genericslab</artifactId>
     <version>1.0-SNAPSHOT</version>
 
     <properties>

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

         TypeOfId extends Serializable,
         TypeOfEntity extends IdentifiableInterface<TypeOfId>>
         implements GroupInterface<TypeOfId, TypeOfEntity> {
-
 }

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

     public List filter(Predicate predicate) {
         return null;
     }
+
+    @Override
+    public Class getIdentityType() {
+        return null;
+    }
+
+    @Override
+    public Class getIdentifiableType() {
+        return null;
+    }
+
 }

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

         TypeOfId extends Serializable,
         TypeOfEntity extends IdentifiableInterface<TypeOfId>> {
 
-   Integer count();
+    Integer count();
 
-   void insert(TypeOfEntity object);
-    
-   void delete(TypeOfEntity object);
+    void insert(TypeOfEntity object);
 
-   void delete(TypeOfId id);
+    void delete(TypeOfEntity object);
 
-   Boolean has(TypeOfEntity object);
+    void delete(TypeOfId id);
 
-   Boolean has(TypeOfId id);
+    Boolean has(TypeOfEntity object);
 
-   List<TypeOfEntity> filter(Predicate<TypeOfEntity> predicate);
+    Boolean has(TypeOfId id);
+
+    List<TypeOfEntity> filter(Predicate<TypeOfEntity> predicate);
+
+    Class<? extends TypeOfId> getIdentityType();
+
+    Class<? extends TypeOfEntity> getIdentifiableType();
 }

src/test/java/com/zipcodewilmington/generic/group/GetIdentityTypeTest.java

+package com.zipcodewilmington.generic.group;
+
+import com.zipcodewilmington.generic.identifiables.ActionFigure;
+import com.zipcodewilmington.generic.identifiables.Person;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * @author leon on 06/12/2018.
+ * there is meaning to the madness
+ * ( ͡☉ ͜ʖ ͡☉)
+ */
+public class GetIdentityTypeTest {
+    private Group<String, Person> personGroup = new Group<>();
+    private Group<Long, ActionFigure> actionFigureGroup = new Group<>();
+
+    @Test
+    public void testGetIdentityType() { // ༼∵༽ ༼⍨༽ ༼⍢༽ ༼⍤༽
+        Assert.assertEquals(personGroup.getIdentityType(), String.class);
+        Assert.assertEquals(actionFigureGroup.getIdentityType(), Long.class);
+    }
+
+    @Test
+    public void testGetIdentifiableType() { // ヽ༼ ಠ益ಠ ༽ﾉ
+        Assert.assertEquals(personGroup.getIdentifiableType(), Person.class);
+        Assert.assertEquals(actionFigureGroup.getIdentifiableType(), ActionFigure.class);
+    }
+}