original_string: public function getBundles($extension = null)
      {
          if ($extension === null) {
              return $this->bundles;
          }
          elseif (isset($this->bundles[$extension])) {
              return $this->bundles[$extension];
          }
          else {
              return null;
          }
      }
code: public function getBundles($extension = null)
      {
          if ($extension === null) {
              return $this->bundles;
          }
          elseif (isset($this->bundles[$extension])) {
              return $this->bundles[$extension];
          }
          else {
              return null;
          }
      }
code_tokens: public function getBundles ( $ extension = null ) { if ( $ extension === null ) { return $ this -> bundles ; } elseif ( isset ( $ this -> bundles [ $ extension ] ) ) { return $ this -> bundles [ $ extension ] ; } else { return null ; } }
docstring: Returns bundles.
  @param string $extension Extension name. Eg: css
  @return self
docstring_tokens: Returns bundles .