code: public Controller setAttrs(Map<String, Object> attrMap) {
  		for (Map.Entry<String, Object> entry : attrMap.entrySet())
  			request.setAttribute(entry.getKey(), entry.getValue());
  		return this;
  	}
docs: Stores attributes in this request, key of the map as attribute name and value of the map as attribute value
  @param attrMap key and value as attribute of the map to be stored