code: @Override
      public void activate(final Mp instance, final Object key) throws DempsyException {
          try {
              instance.activate(key);
          } catch(final RuntimeException rte) {
              throw new DempsyException(rte, true);
          }
      }
docs: This lifecycle phase is implemented by invoking the {@link Mp#activate(Object)} method and supplying
  the key that this {@link Mp} instance will be responsible for.
  
  @see MessageProcessorLifecycle#activate(Object, Object)