original_string: private function _distance( $out, $key )
      {
          return $this->distanceBetweenPoints(
              $this->points[$out],
              $this->points[$key]
          );
      }
code: private function _distance( $out, $key )
      {
          return $this->distanceBetweenPoints(
              $this->points[$out],
              $this->points[$key]
          );
      }
code_tokens: private function _distance ( $ out , $ key ) { return $ this -> distanceBetweenPoints ( $ this -> points [ $ out ] , $ this -> points [ $ key ] ) ; }
docstring: Short-cut function for distanceBetweenPoints method
  
  @param integer $out Test point-index
  @param integer $key Index point-index (what???)
  
  @return double
docstring_tokens: Short - cut function for distanceBetweenPoints method