original_string: public function pixelIndex(Int $x, Int $y) : Int
      {
          return imagecolorat($this->canvas, $x, $y);
      }
code: public function pixelIndex(Int $x, Int $y) : Int
      {
          return imagecolorat($this->canvas, $x, $y);
      }
code_tokens: public function pixelIndex ( Int $ x , Int $ y ) : Int { return imagecolorat ( $ this -> canvas , $ x , $ y ) ; }
docstring: Set pixel index
  
  @param int $x
  @param int $y
  
  @return int
docstring_tokens: Set pixel index