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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 get(self, pid, record, **kwargs):
 """Get a record. Permissions: ``read_permission_factory`` Procedure description: #. The record is resolved reading the pid value from the url. #. The ETag and If-Modifed-Since is checked. #. The HTTP response is built with the help of the link factory. :param pid: Persistent identifier for record. :param record: Record object. :returns: The requested record. """

        etag = str(record.revision_id)
        self.check_etag(str(record.revision_id))
        self.check_if_modified_since(record.updated, etag=etag)

        return self.make_response(
            pid, record, links_factory=self.links_factory
        )