original_string: public function getCacheDir()
  	{
  		if ($this->cacheDir === null) {
  			$this->setCacheDir(dirname(__FILE__).DIRECTORY_SEPARATOR.'cache'.DIRECTORY_SEPARATOR);
  		}
  
  		return $this->cacheDir;
  	}
code: public function getCacheDir()
  	{
  		if ($this->cacheDir === null) {
  			$this->setCacheDir(dirname(__FILE__).DIRECTORY_SEPARATOR.'cache'.DIRECTORY_SEPARATOR);
  		}
  
  		return $this->cacheDir;
  	}
code_tokens: public function getCacheDir ( ) { if ( $ this -> cacheDir === null ) { $ this -> setCacheDir ( dirname ( __FILE__ ) . DIRECTORY_SEPARATOR . 'cache' . DIRECTORY_SEPARATOR ) ; } return $ this -> cacheDir ; }
docstring: returns the cache directory with a trailing DIRECTORY_SEPARATOR
  
  @return string
docstring_tokens: returns the cache directory with a trailing DIRECTORY_SEPARATOR