feat: Add mapper for objects with same fields

test/Destination.java

@@ -0,0 +1,12 @@
+public class Destination {
+    private String first;
+    private String second;
+
+    public String getFirst() {
+        return first;
+    }
+
+    public String getSecond() {
+        return second;
+    }
+}

test/MapperTest.java

@@ -0,0 +1,29 @@
+import org.junit.jupiter.api.*;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class MapperTest {
+    private Mapper mapper;
+
+    @BeforeEach
+    void setUp() {
+        mapper = new Mapper();
+    }
+
+    @Test
+    void testEmptyFieldsMap() {
+        Source source = new Source();
+        Object destination = mapper.map(source, "Destination");
+        assertEquals(Destination.class, destination.getClass());
+    }
+
+    @Test
+    void testMapWithSameFields() {
+        Source source = new Source();
+        source.setFirst("first");
+        source.setSecond("second");
+
+        Destination destination = (Destination) mapper.map(source, "Destination");
+        assertEquals("first", destination.getFirst());
+    }
+}

test/Source.java

@@ -0,0 +1,12 @@
+public class Source {
+    private String first;
+    private String second;
+
+    public void setFirst(String first) {
+        this.first = first;
+    }
+
+    public void setSecond(String second) {
+        this.second = second;
+    }
+}