@Test
public void testSignHeaders() {

  WSParams params = WSParams.create();
  params.api("api");
  params.version("1.0.0");
  params.accessKey("ak");
  params.secretKey("sk");
  params.nonce(true);
  params.fingerPrinter("wiseking");
  Map<String, String> headers = WSClientSDK.generateSignHeaders(params);
  System.out.println(headers);
  Assert.assertTrue("must include api", headers.containsKey(CsbSDKConstants.API_NAME_KEY));
}