The 'black_hole' component provides dummy implementations of common
session interfaces.

At this time, the following sessions are provided if enabled
in the configuration of the component:

* Audio_in
* Audio_out
* Capture
* Event
* Nic
* Uplink

<config>
	<audio_in/>
	<audio_out/>
	<capture/>
	<event/>
	<nic/>
	<uplink/>
</config>
