code: def get_choices_files_map(self):
          
          files_map = []
          for choice in self.get_choices():
              choice = dict(choice)
              choice['smallOrthoViewSet'] = base64.b64encode(
                  self._get_asset_content(Id(choice['assetId']),
                                          OV_SET_SMALL_ASSET_CONTENT_TYPE
                                          ).get_data().read())
              choice['largeOrthoViewSet'] = base64.b64encode(
                  self._get_asset_content(Id(choice['assetId']),
                                          OV_SET_LARGE_ASSET_CONTENT_TYPE
                                          ).get_data().read())
              del choice['assetId']
              files_map.append(choice)
          return files_map
docs: stub