Added docs for return type in RDSE internal func.
Added docs for return type in RDSE internal func.

vitaly-krugl/nupic,numenta/nupic,arhik/nupic,rhyolight/nupic,alfonsokim/nupic,lscheinkman/nupic,EricSB/nupic,cogmission/nupic,scottpurdy/nupic,numenta/nupic,numenta-ci/nupic,blueburningcoder/nupic,blueburningcoder/nupic,subutai/nupic,neuroidss/nupic,ywcui1990/nupic,blueburningcoder/nupic,ywcui1990/nupic,rhyolight/nupic,ywcui1990/nupic,badlogicmanpreet/nupic,rhyolight/nupic,neuroidss/nupic,vitaly-krugl/nupic,lscheinkman/nupic,badlogicmanpreet/nupic,alfonsokim/nupic,pulinagrawal/nupic,marionleborgne/nupic,cogmission/nupic,neuroidss/nupic,scottpurdy/nupic,badlogicmanpreet/nupic,arhik/nupic,EricSB/nupic,numenta-ci/nupic,EricSB/nupic,alfonsokim/nupic,vitaly-krugl/nupic,marionleborgne/nupic,numenta-ci/nupic,pulinagrawal/nupic,pulinagrawal/nupic,lscheinkman/nupic,numenta/nupic,subutai/nupic,rcrowder/nupic,cogmission/nupic,subutai/nupic,arhik/nupic,scottpurdy/nupic,marionleborgne/nupic,rcrowder/nupic,rcrowder/nupic