private void maybeCompleteInitialEndpointsFuture(List<Endpoint> endpoints) {
        if (endpoints != UNINITIALIZED_ENDPOINTS && !initialEndpointsFuture.isDone()) {
            initialEndpointsFuture.complete(endpoints);
        }
    }
Fails the initialization of this {@link DynamicEndpointGroup} with the specified {@link Throwable}.
core/src/main/java/com/linecorp/armeria/client/endpoint/DynamicEndpointGroup.java