If the instance is created without arguments, the newly instatiated broker is not configured. Those references i.e. may occure if content provider implementations hold references to the Broker. The Broker itself always holds its providers. This interface is required.
Description provides access to all kind of contents provided by the registered content providers.
This interface is required. This interface is required. This interface is required. Description supports the configuration of a newly created broker. The method should be called with two arguments of type string.