def has_url(self, url):
        return self.has_key(self._url_to_key(url))
Calculates a base64 MD5 digest of the contents of a seekable stream.
dataset/ETHPy150Open reclosedev/requests-cache/requests_cache/backends/base.py/BaseCache.has_url--crossover with--dataset/ETHPy150Open GoogleCloudPlatform/gsutil/gslib/hashing_helper.py/CalculateB64EncodedMd5FromContents