@property
    def _nvXxPr(self):
        return self.xpath('./*[1]')[0]
Return the first procotol in candidates
dataset/ETHPy150Open scanny/python-pptx/pptx/oxml/shapes/shared.py/BaseShapeElement._nvXxPr--crossover with--dataset/ETHPy150Open braiden/python-ant-downloader/antd/garmin.py/Device._find_core_protocol