question: private boolean handleCallbacksInternally ( HttpServletRequest request , HttpServletResponse response , Callback [ ] callbacks ) throws RestAuthException { for ( Callback callback : callbacks ) { RestAuthCallbackHandler restAuthCallbackHandler = restAuthCallbackHandlerFactory . getRestAuthCallbackHandler ( callback . getClass ( ) ) ; if ( ! restAuthCallbackHandler . updateCallbackFromRequest ( request , response , callback ) ) { return false ; } } return true ; }
target:  Attempts to update the Callbacks from the headers and request. If the Callback cannot be completed from the headers and request or the headers and request do not contain the required information the method returns false.