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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 to_zipfile(self, resource, zipfile):
 """ Dumps the given resource and all resources linked to it into the given ZIP file. """

        rpr_map = self.to_strings(resource)
        with ZipFile(zipfile, 'w') as zipf:
            for (mb_cls, rpr_string) in iteritems_(rpr_map):
                fn = get_collection_filename(mb_cls, self.__content_type)
                zipf.writestr(fn, rpr_string, compress_type=ZIP_DEFLATED)