### Question:
Config { public static final Boolean isSmartSearchCcsDisabled() { String smartSearchCcsDisabled = !Strings.isNullOrEmpty(SMART_SEARCH_CCS_DISABLED) ? SMART_SEARCH_CCS_DISABLED : getEnvironmentVariable("SMART_SEARCH_CCS_DISABLED"); return Boolean.TRUE.toString().equalsIgnoreCase(smartSearchCcsDisabled); }  static DeploymentEnvironment getDeploymentEnvironment(); static String getIndexerHostUrl(); static String getSearchHostUrl(); static String getStorageQueryRecordFoRConversionHostUrl(); static String getStorageQueryRecordHostUrl(); static int getStorageRecordsBatchSize(); static String getStorageSchemaHostUrl(); static String getEntitlementsHostUrl(); static String getEntitlementTargetAudience(); static String getIndexerQueueHost(); static String getElasticCredentialsDatastoreKind(); static String getElasticCredentialsDatastoreId(); static boolean isLocalEnvironment(); static boolean isPreP4d(); static boolean isPreDemo(); static String getSearchRedisHost(); static int getSearchRedisPort(); static int getSchemaCacheExpiration(); static int getIndexCacheExpiration(); static int getKindsCacheExpiration(); static int getKindsRedisDataBase(); static int getAttributesCacheExpiration(); static int getElasticCacheExpiration(); static int getCursorCacheExpiration(); static String getGoogleCloudProjectId(); static String getDeployedServiceId(); static String getDeployedVersionId(); static String getElasticServerAddress(); static String getElasticClusterName(); static String getKmsRing(); static String getKmsKey(); static String getGoogleAudiences(); static String[] getIndexCleanupPattern(); static String[] getIndexCleanupTenants(); static int getIndexCleanupThresholdDays(); static int getEmptyIndexCleanupThresholdDays(); static final Boolean isSmartSearchCcsDisabled(); static Config Instance();  }### Answer:
@Test public void try_get_ccsStatus() { System.setProperty("SMART_SEARCH_CCS_DISABLED", "true"); assertTrue(Config.isSmartSearchCcsDisabled()); System.setProperty("SMART_SEARCH_CCS_DISABLED", ""); assertFalse(Config.isSmartSearchCcsDisabled()); }