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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 _wrap_paginated_response(cls, request, response, controls, data, head=None):
 """Builds the metadata for a pagingated response and wraps everying in a JSON encoded web.Response """

        paging_response = response['paging']
        if head is None:
            head = response['head_id']
        link = cls._build_url(
            request,
            head=head,
            start=paging_response['start'],
            limit=paging_response['limit'])

        paging = {}
        limit = controls.get('limit')
        start = controls.get("start")
        paging["limit"] = limit
        paging["start"] = start
        # If there are no resources, there should be nothing else in paging
        if paging_response.get("next") == "":
            return cls._wrap_response(
                request,
                data=data,
                metadata={
                    'head': head,
                    'link': link,
                    'paging': paging
                })

        next_id = paging_response['next']
        paging['next_position'] = next_id

        # Builds paging urls specific to this response
        def build_pg_url(start=None):
            return cls._build_url(request, head=head, limit=limit, start=start)

        paging['next'] = build_pg_url(paging_response['next'])

        return cls._wrap_response(
            request,
            data=data,
            metadata={
                'head': head,
                'link': link,
                'paging': paging
            })