This can be useful to set up the profile with additional commands,
e.g. when injecting new "virtual" commands based upon the EVAL and
the Predis\Commands\ScriptedCommand class.
When the argument of 'profile' is an instance of Predis\Profiles\IServerProfile
the value of the 'prefix' option is ignored, which means that it is up to the
user to initialize the appropriate prefix processor.
This is a starting point to add a documentation of the whole set of APIs and
classes of Predis. The next step will be to actually improve and extend it.