code: @Test public void should_find() throws Exception {
    Long id=RandomUtils.nextLong();
    EntityWithCompositePartitionKey entity=new EntityWithCompositePartitionKey(id,"type","value");
    manager.persist(entity);
    EntityWithCompositePartitionKey found=manager.find(EntityWithCompositePartitionKey.class,new EmbeddedKey(id,"type"));
    assertThat(found).isNotNull();
    assertThat(found).isInstanceOf(Factory.class);
    assertThat(found.getId().getId()).isEqualTo(id);
    assertThat(found.getId().getType()).isEqualTo("type");
    assertThat(found.getValue()).isEqualTo("value");
  }
  