docs: def add(self, media, filepath, overwrite=True):
          """Set *media* from local file *filepath*. *overwrite* parameter specify
          if the media must be overwrite if it exists remotely.
          """
          with open(filepath, 'rb') as fhandler:
              self._dokuwiki.send('wiki.putAttachment', media,
                                  Binary(fhandler.read()), ow=overwrite)