@UnstableApi
    public static EurekaEndpointGroupBuilder builder(HttpPreprocessor preprocessor) {
        return new EurekaEndpointGroupBuilder(preprocessor, null);
    }
Returns a new {@link EurekaEndpointGroupBuilder} created with the specified {@link HttpPreprocessor}.
eureka/src/main/java/com/linecorp/armeria/client/eureka/EurekaEndpointGroup.java