Answered Fatal Error after renaming of manager

$this->_properties= $this->xpdo->parser->parseProperties($this->get('properties'));

    public function getProperties($properties = null) {
        $this->xpdo->getParser();
        $this->_properties= $this->xpdo->parser->parseProperties($this->get('properties'));
        $set= $this->getPropertySet();
        if (!empty($set)) {
            $this->_properties= array_merge($this->_properties, $set);
        }
        if ($this->get('property_preprocess')) {
            foreach ($this->_properties as $pKey => $pValue) {
                if ($this->xpdo->parser->processElementTags('', $pValue, $this->xpdo->parser->isProcessingUncacheable())) {
                    $this->_properties[$pKey]= $pValue;
                }
            }
        }
        if (!empty($properties)) {
            $this->_properties= array_merge($this->_properties, $this->xpdo->parser->parseProperties($properties));
        }
        return $this->_properties;
    }