}
        """
    }

    def assertChildrenNotIn(BuildOperationRecord origin, BuildOperationRecord op, List<BuildOperationRecord> allOps) {
        for (BuildOperationRecord child : op.children) {
            assert !allOps.contains(child): "Task operation $origin has child $child which is also a task operation"
            assertChildrenNotIn(origin, child, allOps)
        }
    }