original_string: protected function getFilesystem()
  	{
  		if (!isset($this->filesystem)) {
  			$this->filesystem = new Filesystem($this->getAdapter());
  		}
  		return $this->filesystem;
  	}
code: protected function getFilesystem()
  	{
  		if (!isset($this->filesystem)) {
  			$this->filesystem = new Filesystem($this->getAdapter());
  		}
  		return $this->filesystem;
  	}
code_tokens: protected function getFilesystem ( ) { if ( ! isset ( $ this -> filesystem ) ) { $ this -> filesystem = new Filesystem ( $ this -> getAdapter ( ) ) ; } return $ this -> filesystem ; }
docstring: Retrives the Filesystem object. Instantiate if it hasn't already been.
  
  @return	\League\Flysystem\Filesystem Flysystem filesystem object
  @see  	http://flysystem.thephpleague.com/api
docstring_tokens: Retrives the Filesystem object . Instantiate if it hasn t already been .