src/Zend/Cache/Backend/Static.php
public function getOption($name)
    {
        $name = strtolower($name);

        if ($name == 'tag_cache') {
            return $this->getInnerCache();
        }

        return parent::getOption($name);
    }
public function getOption($name)
    {
        $name = strtolower($name);

        if ($name == 'tag_cache') {
            return $this->getInnerCache();
        }

        return parent::getOption($name);
    }
Retrieve any option via interception of the parent's statically held
options including the local option for a tag cache.

@param  string $name
@return mixed