title: java.lang.NoSuchMethodError: javax/ws/rs/core/MultivaluedMap.addAll
body: <p>I am using all latest jar and Java 8 and Java EE 6 version, getting <code>java.lang.NoSuchMethodError</code>.</p>
  
  <p>Tried with <code>jersey-client-2.27.jar</code>, <code>2.26</code>, <code>2.28</code> version, still having the same problem, even checked that the method is available in the corresponding jar.</p>
  
  <pre><code>    Client client = ClientBuilder.newClient();
      WebTarget sendWT = client.target(blueMailUrl);
  
      Invocation.Builder builder = sendWT
          .request(MediaType.APPLICATION_JSON)
          .header(
              "Authorization", 
              "Basic " + DatatypeConverter.printBase64Binary((byte[]) (blueMailUserid + ":" + blueMailPassword).getBytes("UTF-8"))
          );
  </code></pre>
  
  <p>It should not throw this error.</p>