@property
    def information_source(self):
        return self._information_source
If the target of a  statement uses any or all of the valid forms
dataset/ETHPy150Open STIXProject/python-stix/stix/core/stix_header.py/STIXHeader.information_source--crossover with--dataset/ETHPy150Open timothycrosley/frosted/frosted/test/test_other.py/test_withStatementComplicatedTarget