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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 multiget_slice(self, keys, column_parent, predicate, consistency_level):
 """ Performs a get_slice for column_parent and predicate for the given keys in parallel. Parameters: - keys - column_parent - predicate - consistency_level """

    self._seqid += 1
    d = self._reqs[self._seqid] = defer.Deferred()
    self.send_multiget_slice(keys, column_parent, predicate, consistency_level)
    return d