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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 add_account_to_group(self, account, group):
 """ Add account to group. """

        lgroup: OpenldapGroup = self._get_group(group.name)
        person: OpenldapAccount = self._get_account(account.username)

        changes = changeset(lgroup, {})
        changes = lgroup.add_member(changes, person)
        save(changes, database=self._database)