code: def _get_filename(request, item):
          
          if request.keep_image_names:
              filename = OgcImageService.finalize_filename(item['niceName'].replace(' ', '_'))
          else:
              filename = OgcImageService.finalize_filename(
                  '_'.join([str(GeopediaService._parse_layer(request.layer)), item['objectPath'].rsplit('/', 1)[-1]]),
                  request.image_format
              )
  
          LOGGER.debug("filename=%s", filename)
          return filename
docs: Creates a filename