function prepareAnimation(animationDetails) {
      // TODO(matsko): make sure to check for grouped animations and delegate down to normal animations
      var element = animationDetails.element;
      var event = animationDetails.event;
      var options = animationDetails.options;
      var classes = animationDetails.classes;
      return $$animateJs(element, event, classes, options);
    }
@ngdoc function
@name pascalprecht.translate.$translate#storage
@methodOf pascalprecht.translate.$translate

@description
Returns registered storage.

@return {object} Storage