code: public void targetAppears( TargetHandler targetItf ) {
  		this.defaultTargetHandlerResolver.addTargetHandler( targetItf );
  
  		// When a target is deployed, we may also have to update instance states.
  		// Consider as an example when the DM restarts. Targets may be injected
  		// before and after the pojo was started by iPojo.
  
  		// See #519 for more details.
  		// Notice we restore instances only when the DM was started (the messaging
  		// must be ready). If it is not started, do nothing. The "start" method
  		// will trigger the restoration.
  
  		// We consider the DM is started if the timer is not null.
  		if( this.timer != null )
  			restoreInstancesFrom( targetItf );
  	}
docs: This method is invoked by iPojo every time a new target handler appears.
  @param targetItf the appearing target handler