public function get($key)
    {
        if (array_key_exists($key, $this->store)) {
            return $this->store[$key];
        }
        return null;
    }
public function get($key)
    {
        if (array_key_exists($key, $this->store)) {
            return $this->store[$key];
        }
        return null;
    }
public function get ( $ key ) { if ( array_key_exists ( $ key , $ this -> store ) ) { return $ this -> store [ $ key ] ; } return null ; }
check for a rulestore in the registry
return NULL if no matching name if found

@param $key
@return mixed|null
check for a rulestore in the registry return NULL if no matching name if found