def __init__(self, stream):
        testresult.TestResult.__init__(self)
        self._stream = stream
        self.failed_tests = 0
        self.skipped_tests = 0
        self.seen_tags = set()
returns the instance number that this path represents in the DAG. The instance number can be used to determine which
dataset/ETHPy150Open byt3bl33d3r/pth-toolkit/lib/python2.7/site-packages/samba/external/subunit/__init__.py/TestResultStats.__init__--crossover with--dataset/ETHPy150Open CountZer0/PipelineConstructionSet/python/maya/site-packages/pymel-1.0.3/pymel/core/nodetypes.py/DagNode.instanceNumber