public function getTargets()
    {
        if (!is_array($this->_targets)) {
            $this->_targets = array();
            if($this->_getTargetMap()) {
                foreach ($this->_getTargetMap() as $_target) {
                    $this->_targets[$_target['name']] = (string)$_target['uri'];
                }
            }
        }
        return $this->_targets;
    }