code: @SuppressWarnings("ResultOfMethodCallIgnored")
  	@Override
  	public void close() {
  		for (File tempFile : tempFiles)
  			tempFile.delete();
  		tempFiles.clear();
  		fontFiles.clear();
  		fontMap.clear();
  	}
docs: Close / delete all resources associated with this drawer. This mainly means
  deleting all temporary files. You can not use this object after a call to
  close.
  
  Calling close multiple times does nothing.