async def delete_pairwise(self, their_did: str) -> None:
        """
        Remove a pairwise DID record by its remote DID. Silently return if no such record is present.
        Raise WalletState for closed wallet, or BadIdentifier for invalid pairwise DID.

        :param their_did: remote DID marking pairwise DID to remove
        """

        LOGGER.debug('Wallet.delete_pairwise >>> their_did: %s', their_did)

        if not ok_did(their_did):
            LOGGER.debug('Wallet.delete_pairwise <!< Bad DID %s', their_did)
            raise BadIdentifier('Bad DID {}'.format(their_did))

        await self.delete_non_secret(TYPE_PAIRWISE, their_did)

        LOGGER.debug('Wallet.delete_pairwise <<<')
Remove a pairwise DID record by its remote DID. Silently return if no such record is present.
        Raise WalletState for closed wallet, or BadIdentifier for invalid pairwise DID.

        :param their_did: remote DID marking pairwise DID to remove