Pattern for collection deferred promises at once

deferredPromisesPattern.js

function fetchFromService(data) {
    var promises = [];
    _.each(data, function(item) {
      var deferred = $q.defer();
      someService.getItem(item).then(function(response) {
        deferred.resolve(response);
      });
      promises.push(deferred.promise);
    });
      return $q.all(promises);
}