This question has been answered by joe-petts. See the first response.
$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; }
$this->_properties= $this->xpdo->parser->parseProperties($this->get('properties'));