original_string: public function encode($format = null, $quality = 90)
      {
          return $this->driver->encode($this, $format, $quality);
      }
code: public function encode($format = null, $quality = 90)
      {
          return $this->driver->encode($this, $format, $quality);
      }
code_tokens: public function encode ( $ format = null , $ quality = 90 ) { return $ this -> driver -> encode ( $ this , $ format , $ quality ) ; }
docstring: Starts encoding of current image
  
  @param  string  $format
  @param  int     $quality
  @return \Intervention\Image\Image
docstring_tokens: Starts encoding of current image