@property
    def r_handler(self):
        return self.ref_rh
The current task will block and wait for the given *tasks* to complete. When all *tasks* have finished a list of 
dataset/ETHPy150Open toastdriven/restless/restless/tnd.py/TornadoResource.r_handler--crossover with--dataset/ETHPy150Open concurrence/concurrence/lib/concurrence/core.py/Tasklet.join_all