code: function scanHash(hash) {
      var containsStream = false;
  
      for (var prop in hash) {
        if (isStream(hash[prop])) {
          containsStream = true;
          break;
        }
      }
  
      return containsStream;
    }
docs: /*
  Check whether a hash has any stream property values.
  
  @private
  @for Ember.stream
  @function scanHash
  @param {Object} hash "hash" argument given to a handlebars helper.
  @return {Boolean} `true` if the object contains a stream/bound value, `false`
  otherwise.