Add support for the chunk method.

Author: javadev

lodash-plugin/src/main/java/com/github/underscore/lodash/$.java

@@ -60,8 +60,15 @@ public static <T> Chain chain(final T ... list) {
         return new $.Chain<T>(Arrays.asList(list));
     }
 
-    public static <T> List<List<T>> chunk(final List<T> list, final Integer count) {
-        return Collections.emptyList();
+    public static <T> List<List<T>> chunk(final List<T> list, final Integer size) {
+        int index = 0;
+        int length = list.size();
+        final List<List<T>> result = new ArrayList<List<T>>(length / size);
+        while (index < length) {
+            result.add(list.subList(index, Math.min(length, index + size)));
+            index += size;
+        }
+        return result;
     }
 
     public static void main(String ... args) {

lodash-plugin/src/test/java/com/github/underscore/lodash/LodashTest.java

@@ -44,8 +44,8 @@ public class LodashTest {
 */
     @Test
     public void chunk() {
-        assertEquals("[]", $.chunk(asList("a", "b", "c", "d"), 2).toString());
-        assertEquals("[]", $.chunk(asList("a", "b", "c", "d"), 3).toString());
+        assertEquals("[[a, b], [c, d]]", $.chunk(asList("a", "b", "c", "d"), 2).toString());
+        assertEquals("[[a, b, c], [d]]", $.chunk(asList("a", "b", "c", "d"), 3).toString());
     }
 
     @Test