null, 'Capture' => null); public function refund($params) { $resource = $this->derivedResources['refunds']; if ($resource) { return parent::_create($resource->resourceName, $params, array('parent' => $this)); } } public function capture($params) { $resource = $this->derivedResources['captures']; if ($resource) { return parent::_create($resource->resourceName, $params, array('parent' => $this)); } } public function update($params) { return $this->_updateCharge($params); } } ?>