def observe(self, amount):
        self._count.inc(1)
        self._sum.inc(amount)
getList() -> list of str values
dataset/ETHPy150Open prometheus/client_python/prometheus_client/core.py/Summary.observe--crossover with--dataset/ETHPy150Open VisTrails/VisTrails/vistrails/gui/modules/paramexplore.py/QListEditDialog.getList