  void expectHealthcheckStart(size_t index) {
    expectStreamCreate(index);
    EXPECT_CALL(*test_sessions_[index]->timeout_timer_, enableTimer(_, _));
  }
  void expectHealthcheckStart(size_t index) {
    expectStreamCreate(index);
    EXPECT_CALL(*test_sessions_[index]->timeout_timer_, enableTimer(_, _));
  }