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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 move(self, group, cluster_ids=None):
 """Assign a group to some clusters. Example: `good` """

        if isinstance(cluster_ids, string_types):
            logger.warn("The list of clusters should be a list of integers, "
                        "not a string.")
            return
        self.label('group', group, cluster_ids=cluster_ids)