function loadSession (req, res, next){

  // If a session store is configured, and we haven't deliberately disabled
  // session support for this request by setting the "nosession" header,
  // hook up the store up as `req.session` by passing it down to the
  // session middleware.
  if (req._sails._privateSessionMiddleware && !req.headers.nosession) {

    // Access store preconfigured session middleware as a private property on the app instance.
    return req._sails._privateSessionMiddleware(req, res, next);
  }

  // Otherwise don't even worry about it.
  return next();
}
[loadSession description]
@param  {[type]}   req  [description]
@param  {[type]}   res  [description]
@param  {Function} next [description]
@return {[type]}        [description]