Creates a filename

def _get_filename(request, item):
        """ Creates a filename
        """
        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