original_string: public function invalidateResourceIndex(FilterInterface $filter = null)
      {
          $this->cache->deleteItem($this->getResourceIndexKey($filter));
      }
code: public function invalidateResourceIndex(FilterInterface $filter = null)
      {
          $this->cache->deleteItem($this->getResourceIndexKey($filter));
      }
code_tokens: public function invalidateResourceIndex ( FilterInterface $ filter = null ) { $ this -> cache -> deleteItem ( $ this -> getResourceIndexKey ( $ filter ) ) ; }
docstring: Invalidates the cached resource index
docstring_tokens: Invalidates the cached resource index