code: @Override
      public ExpireSessionResult expireSession(ExpireSessionRequest request) {
          request = beforeClientExecution(request);
          return executeExpireSession(request);
      }
docs: <p>
  Immediately stops the specified streaming session.
  </p>
  
  @param expireSessionRequest
  @return Result of the ExpireSession operation returned by the service.
  @sample AmazonAppStream.ExpireSession
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/appstream-2016-12-01/ExpireSession" target="_top">AWS API
  Documentation</a>