public function helper($name) {
		if (isset($this->_helpers[$name])) {
			return $this->_helpers[$name];
		}
		list($plugin, $helperClassName) = pluginSplit($name, true);
		$helperClassName = Inflector::camelize($helperClassName) . "ShellHelper";
		App::uses($helperClassName, $plugin . "Console/Helper");
		if (!class_exists($helperClassName)) {
			throw new RuntimeException("Class " . $helperClassName . " not found");
		}
		$helper = new $helperClassName($this->stdout);
		$this->_helpers[$name] = $helper;

		return $helper;
	}