code: public CacheConfigurationBuilder<K, V> add(Builder<? extends ServiceConfiguration<?>> configurationBuilder) {
      return add(configurationBuilder.build());
    }
docs: Convenience method to add a {@link ServiceConfiguration} that is produced by a {@link Builder}.
  
  @param configurationBuilder the service configuration to add, {@link Builder#build()} will be called on it
  @return a new builder with the added service configuration
  
  @see #add(ServiceConfiguration)