public ServerSetsRegistrationSpecBuilder additionalEndpoints(
            Map<String, Endpoint> additionalEndpoints) {
        requireNonNull(additionalEndpoints, "additionalEndpoints");
        additionalEndpointsBuilder.putAll(additionalEndpoints);
        return this;
    }
Adds the specified additional {@link Endpoint}s.
zookeeper3/src/main/java/com/linecorp/armeria/server/zookeeper/ServerSetsRegistrationSpecBuilder.java