def _purge_attribs(self, intf):
        """ The command generator for purging attributes
        :rtype: A list
        :returns: the commands necessary to purge attributes
        """
        commands = []
        have_copy = deepcopy(intf)
        members = have_copy.pop('members', [])

        to_delete = dict_delete(have_copy,
                                remove_empties({'name': have_copy['name']}))
        if to_delete:
            for key, value in iteritems(flatten_dict(
                    remove_empties(to_delete))):
                commands.append(
                    self._compute_commands(key=key, value=value, remove=True))

        if commands:
            pad_commands(commands, intf['name'])

        if members:
            members = param_list_to_dict(deepcopy(members),
                                         unique_key='member')
            for key in members:
                member_cmd = ['no bundle id']
                pad_commands(member_cmd, key)
                commands.extend(member_cmd)

        return commands
    def _render_interface_del_commands(self, want, have):
        """ The command generator for delete commands
            w.r.t member interfaces
        :rtype: A list
        :returns: the commands necessary to update member
                  interfaces
        """
        commands = []
        if not want:
            want = {}
        have_members = have.get('members')

        if have_members:
            have_members = param_list_to_dict(deepcopy(have_members),
                                              unique_key='member')
            want_members = param_list_to_dict(deepcopy(want).get(
                'members', []),
                                              unique_key='member')

            for key in have_members:
                if key not in want_members:
                    member_cmd = ['no bundle id']
                    pad_commands(member_cmd, key)
                    commands.extend(member_cmd)

        return commands
    def _render_interface_updates(self, want, have):
        """ The command generator for updates to member
            interfaces
        :rtype: A list
        :returns: the commands necessary to update member
                  interfaces
        """
        commands = []

        if not have:
            have = {'name': want['name']}

        member_diff = diff_list_of_dicts(want['members'],
                                         have.get('members', []))

        for diff in member_diff:
            diff_cmd = []
            bundle_cmd = 'bundle id {0}'.format(
                want['name'].split('Bundle-Ether')[1])
            if diff.get('mode'):
                bundle_cmd += ' mode {0}'.format(diff.get('mode'))
            diff_cmd.append(bundle_cmd)
            pad_commands(diff_cmd, diff['member'])
            commands.extend(diff_cmd)

        return commands
    def _state_merged(self, want, have):
        """ The command generator when state is merged

        :rtype: A list
        :returns: the commands necessary to merge the provided into
                  the current configuration
        """
        commands = []
        commands.extend(self._render_bundle_updates(want, have))

        if commands or have == {}:
            pad_commands(commands, want['name'])

        commands.extend(self._render_interface_updates(want, have))

        return commands
    def _state_deleted(want, have):
        """ The command generator when state is deleted

        :rtype: A list
        :returns: the commands necessary to remove the current configuration
                  of the provided objects
        """
        commands = []

        for key, value in iteritems(
                flatten_dict(dict_delete(have, remove_empties(want)))):
            commands.append(
                Lacp_interfaces._compute_commands(key, value, remove=True))

        if commands:
            pad_commands(commands, have['name'])

        return commands
    def _state_merged(want, have):
        """ The command generator when state is merged

        :rtype: A list
        :returns: the commands necessary to merge the provided into
                  the current configuration
        """
        commands = []

        if not have:
            have = {'name': want['name']}

        for key, value in iteritems(
                flatten_dict(remove_empties(dict_diff(have, want)))):
            commands.append(Lacp_interfaces._compute_commands(key, value))

        if commands:
            pad_commands(commands, want['name'])

        return commands
    def _state_replaced(self, want, have):
        """ The command generator when state is replaced

        :rtype: A list
        :returns: the commands necessary to migrate the current configuration
                  to the desired configuration
        """
        commands = []
        if have:
            commands.extend(self._render_bundle_del_commands(want, have))
        commands.extend(self._render_bundle_updates(want, have))

        if commands or have == {}:
            pad_commands(commands, want['name'])

        if have:
            commands.extend(self._render_interface_del_commands(want, have))
        commands.extend(self._render_interface_updates(want, have))

        return commands