This is a wrapper for third party webcomponents. you can wrap this class around to support the provider functionality in third party webcomponents.
You can locally "subscribe" to attributes (e.g. `local-name`) that can be provided by a `dbp-provider` (e.g. `global-name`). The `dbp-adapter` will set the attributes to his childnodes.
### Example
Multiple attributes can be subscribed when separated by a comma (`,`).