 
     models
 
+  unshift: (models...) =>
+    @prependModels(models)
+
   prependIds: (model_cids...) =>
     @model_ids = model_cids.concat(@model_ids)
 


    models

  appendIds: (model_cids...) =>
    @model_ids = @model_ids.concat(model_cids)


  last: =>
    return unless cid = _.last(@model_ids)
    @constructor.model.find({ cid: cid })

  models: (cids = @model_ids) =>
    models = []
