def foreign(self, columns, name=None):
        return self._index_command('foreign', columns, name)
Test to ensure that changes to primary keys throw CQLEngineExceptions
dataset/ETHPy150Open sdispater/orator/orator/schema/blueprint.py/Blueprint.foreign--crossover with--dataset/ETHPy150Open datastax/python-driver/tests/integration/cqlengine/management/test_management.py/SyncTableTests.test_primary_key_validation