original_string: protected function loadFromCache($id, $alphabet)
      {
          if (isset($this->mappingCache[$id]) && isset($this->mappingCache[$id][$alphabet])) {
              return $this->mappingCache[$id][$alphabet];
          }
  
          return null;
      }
code: protected function loadFromCache($id, $alphabet)
      {
          if (isset($this->mappingCache[$id]) && isset($this->mappingCache[$id][$alphabet])) {
              return $this->mappingCache[$id][$alphabet];
          }
  
          return null;
      }
code_tokens: protected function loadFromCache ( $ id , $ alphabet ) { if ( isset ( $ this -> mappingCache [ $ id ] ) && isset ( $ this -> mappingCache [ $ id ] [ $ alphabet ] ) ) { return $ this -> mappingCache [ $ id ] [ $ alphabet ] ; } return null ; }
docstring: Load map from cache.
  
  @param  string     $id       cache ID
  @param  string     $alphabet
  @return array|null char map, null if not found
docstring_tokens: Load map from cache .