def visitPropTestIsSuperset(self, ctx):
     children = self.visitChildren(ctx)
     return stix2.IsSupersetComparisonExpression(children[0], children[2])
def test_issuperset():
    exp = stix2.IsSupersetComparisonExpression(
        "ipv4-addr:value",
        "198.51.100.0/24",
    )
    assert str(exp) == "ipv4-addr:value ISSUPERSET '198.51.100.0/24'"