docs: def get(self, media, dirpath=None, filename=None, overwrite=False, b64decode=False):
          """Returns the binary data of *media* or save it to a file. If *dirpath*
          is not set the binary data is returned, otherwise the data is saved
          to a file. By default, the filename is the name of the media but it can
          be changed with *filename* parameter. *overwrite* parameter allow to
          overwrite the file if it already exists locally.
          """
          import os
          data = self._dokuwiki.send('wiki.getAttachment', media)
          data = base64.b64decode(data) if b64decode else data.data
          if dirpath is None:
              return data
  
          if filename is None:
              filename = media.replace('/', ':').split(':')[-1]
          if not os.path.exists(dirpath):
              os.makedirs(dirpath)
          filepath = os.path.join(dirpath, filename)
          if os.path.exists(filepath) and not overwrite:
              raise FileExistsError("[Errno 17] File exists: '%s'" % filepath)
  
          with open(filepath, 'wb') as fhandler:
              fhandler.write(data)