AccessTokenStore { public Optional<AccessToken> getAccessTokenOptional( long companyId, long userId) { Map<Long, AccessToken> companyAccessTokens = _accessTokenMap.getOrDefault(companyId, new HashMap<>()); return Optional.ofNullable(companyAccessTokens.get(userId)); }  void add(long companyId, long userId, AccessToken accessToken); void delete(long companyId, long userId); Optional<AccessToken> getAccessTokenOptional(
		long companyId, long userId);  }
@Test public void testGetWithEmptyAccessTokenStore() { AccessTokenStore accessTokenStore = new AccessTokenStore(); Optional<AccessToken> accessTokenOptional = accessTokenStore.getAccessTokenOptional( RandomTestUtil.randomInt(), RandomTestUtil.randomInt()); Assert.assertTrue(!accessTokenOptional.isPresent()); }