bool ConnPoolImplBase::maybePreconnectImpl(float global_preconnect_ratio) {
  ASSERT(!deferred_deleting_);
  return tryCreateNewConnection(global_preconnect_ratio) == ConnectionResult::CreatedNewConnection;
}
bool ConnPoolImplBase::maybePreconnectImpl(float global_preconnect_ratio) {
  ASSERT(!deferred_deleting_);
  return tryCreateNewConnection(global_preconnect_ratio) == ConnectionResult::CreatedNewConnection;
}