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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 write_ndef(self, ndef, slot=1):
 """ Write an NDEF tag configuration to the YubiKey NEO. """

        if not self.capabilities.have_nfc_ndef(slot):
            raise yubikey_base.YubiKeyVersionError("NDEF slot %i unsupported in %s" % (slot, self))

        return self._device._write_config(ndef, _NDEF_SLOTS[slot])