public function cacheReset($key = null) {
        if (is_null($key)) {
            $this->_cache = array();
        } else {
            unset($this->_cache[$key]);
        }
    }
public function cacheReset($key = null) {
        if (is_null($key)) {
            $this->_cache = array();
        } else {
            unset($this->_cache[$key]);
        }
    }
public function cacheReset ( $ key = null ) { if ( is_null ( $ key ) ) { $ this -> _cache = array ( ) ; } else { unset ( $ this -> _cache [ $ key ] ) ; } }
Reset the local cache for this token

You can pass in an optional $key parameter to reset just that key, otherwise all
the cache will be reset

@param string|null $key The key to reset
Reset the local cache for this token