### Question:
ConnectorSDKUtil { public static void initialize(Map<String, String> credentials, HttpClient client) throws ConnectorSDKException { httpClient = (client == null ? HttpClientUtil.getHttpClient() : client); instance = new ConnectorSDKUtil(credentials); } private  ConnectorSDKUtil(Map<String, String> credentials); static void initialize(Map<String, String> credentials, HttpClient client); static void initialize(Map<String, String> credentials ); static ConnectorSDKUtil getInstance(); String getAccessToken(); String getEndPoint(ResourceName resourceName); static void initializeLogger(); Properties getConfig(); String getOrDefaultConfigValue(String key); static String getSystemProperty(String key); String getConnectionProperty(String propertyName);  }### Answer:
@Test public void testInitialize() { Map<String, String> inputProps = new HashMap<String, String>(); try { ConnectorSDKUtil.initialize(inputProps); } catch (ConnectorSDKException e) { assert(e.getMessage().contains("ConnectorSDKUtil is not initialized")); } assert(ConnectorSDKUtil.httpClient != null); }