anchor.diff:      <span class="dots" ng-show="indexController.showRightDots()">&ctdot;</span>
   
       <md-button class="md-button" ng-click="indexController.gotoNextPage()"
  -      ng-disabled="indexController.disableNextPageButton()">
  +      ng-disabled="indexController.disableNextPageButton()"
  +      aria-label="Go to next page">
         <md-icon md-svg-icon="navigation:ic_arrow_forward_24px"></md-icon>
       </md-button>
     </nav>
  
positive.code: 
    <nav class="pagination">
      <md-button ng-click="indexController.gotoPrevPage()"
        ng-disabled="indexController.disablePrevPageButton()">
        <md-icon md-svg-icon="navigation:ic_arrow_back_24px"></md-icon>
      </md-button>
  
  
negative.code: 
      <md-button ng-click="indexController.gotoPage(number)"
        ng-disabled="indexController.disablePageButton(number)"
        ng-repeat="number in indexController.pagination.pages()"
        aria-label="Go to page {{ number }}">
        <span ng-class="{ active: indexController.pagination.page == number }"
          class="pageNumber">{{ number }}</span>
      </md-button>
  