async def revoke(self, schemaId: ID, i):
        """
        Performs revocation of a Claim.

        :param schemaId: The schema ID (reference to claim
        definition schema)
        :param i: claim's sequence number within accumulator
        """
        acc, ts = await self._nonRevocationIssuer.revoke(schemaId, i)
        await self.wallet.submitAccumUpdate(schemaId=schemaId, accum=acc,
                                            timestampMs=ts)
Performs revocation of a Claim.

        :param schemaId: The schema ID (reference to claim
        definition schema)
        :param i: claim's sequence number within accumulator