def startReceivingBoxes(self, boxSender):
        self.boxSender = boxSender
Wait for mulitiple tasks to complete. Much faster than calling WaitForTask
dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/protocols/amp.py/BoxDispatcher.startReceivingBoxes--crossover with--dataset/ETHPy150Open vmware/pyvmomi/pyVim/task.py/WaitForTasks