function _checkMergeResult(){
            var data = _getFormValue();

            if(!data.fromBranch && !data.toBranch){
                return;
            }

            _showMergeResult({"message" : Messages("pullRequest.is.merging")});

            NProgress.start();

            $.ajax(vars.mergeResultURL, {
                "data": data
            })
            .done(_onSuccessMergeResult)
            .fail(_onErrorMergeResult)
            .always(function(){
                NProgress.done();
            });
        }
Request merge result with changed branch.

@private