anchor.diff:  performance should not be assumed to be better than local.
   `ExecutionServiceDemo -h` dumps all command line options.
           
  -Currently (July 2011), there is 1 protocol which provide executions:
  +Currently (July 2011), there is one protocol which provide executions:
   <<CENTRAL_EXECUTOR>>. The executing protocol has to be placed at or
   towards the top of the stack (close to the channel).
           
  
positive.code: 
  int runnerCount = 10;
  // locking.xml needs to have a locking protocol
  JChannel ch=new JChannel("/home/bela/executing.xml");
  ch.connect("exec-cluster");
  
  ExecutionRunner runner = new ExecutionRunner(ch);
  
negative.code: 
  [source,java]
  ----
  ch = new JChannel(props);
  CounterService counter_service = new CounterService(ch);
  ch.connect("counter-cluster");
  Counter counter = counter_service.getOrCreateCounter("mycounter", 1);
  ----
  
  In the sample code above, we create a channel first, then create the `CounterService` referencing the channel.
  