@Test
public void getUserDefined() throws Exception {

  final RenderBucketType myBucket = RenderBucketType.getRenderBucketType("MyBucket");
  assertNotNull(myBucket);
  final RenderBucketType myBucket2 = RenderBucketType.getRenderBucketType("MyBucket");
  assertSame(myBucket, myBucket2);
}