public function generateName ()
	{
	    $chars = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','0','1','2','3','4','5','6','7','8','9'];
	    $cod = self::DEFAULT_AGENT;
	    for ($i=0; $i < 5; $i++) { 
	        $cod .= $chars[mt_rand(0, count($chars) - 1)];
	    }
	    $cod .= '_';
	    $cod .= time();
	    return $cod;
	}