Trying add templates in TwitterExcept

Twitter.php

<?php
	
namespace Respect\Validation\Rules;
use Respect\Validation\Exceptions\ComponentException;
	
class Twitter extends AbstractRule
{
	private $pattern = '/^@[a-zA-Z0-9]/';
	private $curl = NULL;
	
	public function validate($input){
		if(!preg_match('#^\S+$#', $input)) 	
			return false;	
		if(!preg_match($this->pattern,$input)) 
			return false;
		
		$this->curl = curl_init('http://api.twitter.com/1/users/show.json?screen_name='.substr($input,1));
		
		curl_setopt($this->curl,CURLOPT_HTTPGET,1);
		curl_setopt($this->curl, CURLOPT_HEADER, 0);
		curl_setopt($this->curl,CURLOPT_RETURNTRANSFER,1);
		$account  = json_decode(curl_exec($this->curl)); 
		
		return (property_exists($account,'id')); 	
		
	}	
}

TwitterException.php

<?php

namespace Respect\Validation\Exceptions;
class TwitterException extends ValidationException
{
	const CONNECTION = 0;
	public static $defaultTemplates = array(
	self::MODE_DEFAULT => array(
            self::STANDARD => '{{name}} must be a Twitter account',
            self::CONNECTION => 'Failed connection with account {{name}}',
        ),
        self::MODE_NEGATIVE => array(
            self::STANDARD => '{{name}} must be a Twitter account',
            self::CONNECTION => 'Failed connection with account {{name}}',
        )
	);
	
        public function configure(){ /* how it works ?*/ }
	public function chooseTemplate(){
		if(is_null($this->getParam('account')))
			return self::CONNECTION;
		return self::STANDARD;
	}
}