code: function() {
  		const message = this.get('message');
  		const label = this.get('attributeLabel');
  
  		Ember.assert('Message must be defined for this Validator', Ember.isPresent(message));
  
  		const args = Array.prototype.slice.call(arguments);
  
  		args.unshift(label);
  		args.unshift(message);
  
  		return format.apply(null, args);
  	}
docs: Formats the validation error message.
  
  All arguments passed to this function would be used by the
  `Ember.String.fmt` method to format the message.
  
  @method format
  @return {String}