def __init__(self, conn_string, queue_name=ALL, task_class=Task, backend_class=None):
        self.conn_string = conn_string
        self.queue_name = queue_name
        self.task_class = task_class
        self.backend_class = backend_class

        if not backend_class:
            self.backend = self.build_backend(self.conn_string)
        else:
            self.backend = backend_class(self.conn_string)
Add a follow-on job function. See :class:`toil.job.JobFunctionWrappingJob`
dataset/ETHPy150Open toastdriven/alligator/alligator/gator.py/Gator.__init__--crossover with--dataset/ETHPy150Open BD2KGenomics/toil/src/toil/job.py/Job.addFollowOnJobFn