original_string: public function add($chunk, $fileInfo = null, $index = 0, $mapLines = null){
  		$this->strs[] = $chunk;
  	}
code: public function add($chunk, $fileInfo = null, $index = 0, $mapLines = null){
  		$this->strs[] = $chunk;
  	}
code_tokens: public function add ( $ chunk , $ fileInfo = null , $ index = 0 , $ mapLines = null ) { $ this -> strs [ ] = $ chunk ; }
docstring: Adds a chunk to the stack
  
  @param string $chunk The chunk to output
  @param Less_FileInfo $fileInfo The file information
  @param integer $index The index
  @param mixed $mapLines
docstring_tokens: Adds a chunk to the stack