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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 association(self, group_xid):
 """Add association using xid value. Args: group_xid (str):
 The external id of the Group to associate. """

        association = {'groupXid': group_xid}
        self._indicator_data.setdefault('associatedGroups', []).append(association)