Extending BulkheadConfig

We have a use case in which we would like to extend `BulkheadConfig` to provide some additional immutable metadata that we then use in various `EventConsumer` and when auditing all bulkheads with `BulkheadRegistry.getAllBulkheads`. Would you be open to changing the scope of the constructor from `private` to `protected`? The class is not `final` but the current API does not enable extension.