src/components/menu/js/menuServiceProvider.js
function onBackdropClick(event) {
        event.preventDefault();
        event.stopPropagation();

        scope.$apply(function() {
          opts.mdMenuCtrl.close(true, { closeAll: true });
        });
      }
function onBackdropClick(event) {
        event.preventDefault();
        event.stopPropagation();

        scope.$apply(function() {
          opts.mdMenuCtrl.close(true, { closeAll: true });
        });
      }
function onBackdropClick ( event ) { event . preventDefault ( ) ; event . stopPropagation ( ) ; scope . $apply ( function ( ) { opts . mdMenuCtrl . close ( true , { closeAll : true } ) ; } ) ; }
Function to be called whenever the backdrop is clicked.
@param {!MouseEvent} event
Function to be called whenever the backdrop is clicked .