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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 make_paginated_list_schema_class(cls, ns, item_schema):
 """ Generate a schema class that represents a paginted list of items. """

        class PaginatedListSchema(Schema):
            __alias__ = "{}_list".format(ns.subject_name)
            items = fields.List(fields.Nested(item_schema), required=True)
            _links = fields.Raw()

        return PaginatedListSchema