@property
  def start_node(self):
    return self._start_node
L{ThreadedResolver.getHostByName} returns a L{Deferred} which fires a
dataset/ETHPy150Open ucb-sts/sts/sts/entities/base.py/DirectedLinkAbstractClass.start_node--crossover with--dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/internet/test/test_base.py/ThreadedResolverTests.test_failure