def updateFromContext(self, other):
        value = self.valueType.set(self.value, other.value)
        self.set(value)
        self.origins.extend(other.origins)
:arg stream: an `.IOStream`
dataset/ETHPy150Open sassoftware/conary/conary/lib/cfg.py/OptionValue.updateFromContext--crossover with--dataset/ETHPy150Open RobotWebTools/rosbridge_suite/rosbridge_server/src/tornado/http1connection.py/HTTP1Connection.__init__