code: @Override
  	public void format(final LoggingEvent event, final StringBuffer toAppendTo) {
  		
  		if(event instanceof FoundationLof4jLoggingEvent){
  			FoundationLof4jLoggingEvent foundationLof4jLoggingEvent = (FoundationLof4jLoggingEvent)event;
  			
  			Marker marker = foundationLof4jLoggingEvent.getSlf4jMarker();
  			
  			marker.getName();
  			
  			if(marker instanceof FoundationLoggingMarker){
  				FoundationLoggingMarker foundationLoggingMarker = (FoundationLoggingMarker)marker;
  				String userFieldValue = foundationLoggingMarker.valueOf(key);
  				if(FoundationLoggingMarker.NO_OPERATION.equals(userFieldValue)){
  					toAppendTo.append("");
  				}else{
  					toAppendTo.append(userFieldValue);	
  				}
  				
  			}
  			
  		}
  		
  		
  	}
docs: {@inheritDoc}