code: public void setBody(final WComponent body) {
  		DecoratedLabelModel model = getOrCreateComponentModel();
  
  		if (body == null) {
  			throw new IllegalArgumentException("Body content must not be null");
  		}
  
  		if (model.body != null) {
  			remove(model.body);
  		}
  
  		model.body = body;
  		add(body);
  	}
docs: Sets the label body content.
  
  @param body the body content, must not be null.