### Question:
HeapCacheProvidingService extends AbstractCacheProvidingService { @Override public CacheManager createCacheManager( PentahoCacheSystemConfiguration systemConfiguration ) { return new GuavaCacheManager(); }  @Override CacheManager createCacheManager( PentahoCacheSystemConfiguration systemConfiguration );  }### Answer:
@Test public void testCreateCacheManager() throws Exception { CacheManager cacheManager = service.createCacheManager( config ); assertThat( cacheManager, instanceOf( GuavaCacheManager.class ) ); }