 as a
 return value, the implementation must construct the text message from the Java primitive equivalent as described
 above.

 <p>
 Developers should note that if developer closes the session during the invocation of a method with a return type, the
 method will complete but the return value will not be delivered to the remote endpoint. The send failure will be
 passed back into the endpoint's error handling method.

 <p>
 For example:

 <pre>
 <code>
 &#64;OnMessage
 public void processGreeting(String m