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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def ocsps(self):
 """ A list of all cached asn1crypto.ocsp.OCSPResponse objects """


        if not self._allow_fetching:
            return self._ocsps

        output = []
        for issuer_serial in self._fetched_ocsps:
            output.extend(self._fetched_ocsps[issuer_serial])
        return output