private function _begin()
{
$settings = $this->getSettings();
$this->_blocks = craft()->neo->getBlocks($settings->fieldId, $settings->ownerId, $settings->locale);
$this->_keywords = [];
$this->_originalContentTable = craft()->content->contentTable;
$this->_originalFieldColumnPrefix = craft()->content->fieldColumnPrefix;
$this->_originalFieldContext = craft()->content->fieldContext;
}